Isekai NTR Inn: My Lover and Little Sister Are Taken from Me Before I Know It

Name: Isekai NTR Inn: My Lover and Little Sister Are Taken from Me Before I Know It
Availability: InStock
Rating: 3.5 (20 reviews)
Author: Marshmallow trap

by Marshmallow trap

Censored Windows

Versionv1.42

EngineOthers

Released2026-07-16

Updated2026-07-16

LanguageChinese, Korean, Japanese, English

In an unfamiliar other world, their peaceful daily lives are quietly encroached upon by the sinister hands of local men. Hiroto, the protagonist, along with his girlfriend Miyuki and his sister Akari, are transported to another world after being enveloped in a mysterious light. The first place the three arrive is an "otherworld inn." In order to find a way back to their own world, the three help out at the inn and gather information, but one day, while in the forest with Clark, a mercenary who is staying there, they are attacked by monsters. This incident causes a rift to slowly begin to form in the bond between the three... Furthermore, a new man calling himself Dejarre appears at the inn, and two dark hands reach out to the beloved Miyuki and Akari... This game is a "real-time progression NTR simulation" in which the heroines live their own lives behind the scenes of the player's actions.

Screenshots

DataNodes MEGA MixDrop Pixeldrain VikingFile

v1.42 ・Improved translation quality to achieve full localization ・Fixed minor malfunctions related to VSync ・Fixed an issue where the tent event would incorrectly register in the recollection room ・Fixed an issue where event flags would conflict or get stuck specifically at 18:00 ・Resolved an issue where the Heroine Side of the hot spring event would intermittently fail to trigger v1.41 ・Added official Traditional Chinese and Russian translations, improved text output quality across all languages, and enhanced visual text layers. ・Resolved an issue where the game would remain stuck on a black screen if interacting with the gym overlapped with the Prince encounter event. ・Improved control methods for certain memory/gallery scenes. ・Resolved an issue where the multi-tool's speed multiplier affected character movement animation speed during time transitions. ・Improved the specific operation mechanics of VSync to resolve screen tearing issues. ・Effectively mitigated frame drops in the Royal Capital by optimizing lighting and status processing. v1.40 ・Changed the playback method for the heroine-side scenes in specific events to resolve an issue where some events would not play correctly in certain environments. ・Resolved an issue where the newly added keyboard and gamepad support could cause frame drops. ・Added more detailed Corruption requirement information to the trigger conditions for certain events. v1.39 ・Significantly reduced the wait time (stiffness) before the player can move after returning from the Royal Capital ・Optimized the time module and lightened the schedule system to significantly reduce lag during time transitions ・Improved long loading times at startup, reduced base memory usage by approx. 30%, and increased loading speed by up to 2x ・Modified the game to automatically adjust screen size to fit the monitor environment upon startup for certain setups (e.g., smaller monitors) ・Modified the title screen to allow changing the screen size to full-screen using keyboard controls ・Updated interfaces that were previously mouse-only to also support keyboard controls ・With 100% keyboard control now available, game controller (pad) support has been added ・Common Controls (Main / Dialogue / UI) Button A = Confirm / Interact / Progress Dialogue / Purchase (Keyboard: E / Enter / Space) Button B = Cancel / Close (Keyboard: Esc) Left Stick = Field Movement, UI Navigation (Keyboard: Arrow Keys / WASD) D-pad = Menu / Shop Focus (Keyboard: Arrow Keys) ・Heroine Status (In Field) LB = Miyuki Front (Keyboard: 1) RB = Akari Front (Keyboard: 2) Y = Miyuki Back (Keyboard: 3) X = Akari Back (Keyboard: 4) ・While Status Window is Open X = Toggle Front/Back (Keyboard: Tab) LB / RB / Y = Change Page (Keyboard: 1 / 2 / 3) [Notice Regarding Mobile Support] ・Verification for the APK port has been completed, and with a few modifications, distributing an APK is possible. However, since the game was fundamentally built for PC, the level of optimization is unknown. iOS support is practically difficult. Overall, providing mobile support is essentially not feasible. v1.38 ・Wrapped the schedule system in a new module to ensure it runs smoothly without stuttering or lag ・Separated the masturbation event from the event chain so it can now occur during normal gameplay ・Fixed some potentially critical behavioral errors ・Resolved an issue where the Prince event would only trigger once per playthrough and then halt unless the player saved and loaded the game v1.37 ・Fixed an issue where clicking Field Memory caused an error due to a missing new file in the release version v1.36 ・Added items for adjusting affection levels ・Fixed an issue where some events were not registered in the recollection gallery ・Improved the system structure where newly added time-related items caused issues with event cleanup (This resolves most event malfunctions) ・Fixed an issue in some events where the new cross-section illustrations did not match the context v1.35 ・Fixed an issue where the "Encounter with the Prince" event for Miyuki could also repeatedly trigger in a loop. ・Fixed a bug where sound effects from recollection scenes would continue playing even after exiting the recollection. v1.34 ・Fixed an issue where stats and action counts were not properly updated when some events ended in the background. ・Fixed a bug where the "Encounter with the Prince" event in the royal capital could repeatedly trigger in a loop. v1.33 ・Fixed an issue where audio might not properly clear or stop in certain scenes. v1.32 ・Fixed an issue where a daily event could overwrite an ongoing event immediately after it was triggered. ・Fixed an issue where characters occasionally couldn't be sent to part-time jobs, or when sending two characters, the first character's job status would be canceled. ・Added the "First meeting with the Prince" event to the recollection room. v1.31 ・Fixed an issue where some recollections were not working properly. ・Fixed an issue where some existing recollections could disappear. ・Fixed various performance errors. ・Increased the probability of occurrence for certain rare events. ・Optimized field recollections: Now copies only the relevant characters instead of the entire world map. ・Fixed an error in the opening event. v1.30 ・Fixed an issue where some recollections did not function properly. ・Fixed an issue where a portion of existing recollections could be lost. v1.28 ・Changed the event cleanup mechanism to ensure events are cleared smoothly and correctly. ・Fixed an issue where the early parts of some meal events did not trigger properly. ・Fixed an issue where stats did not increase properly during certain early events. v1.27 ・Fixed an issue where the visual (CG) for the Prince encounter event was not displaying. ・Fixed an issue where stats would not increase during certain events. Note: v1.27 is a temporary patch. Due to a lack of time, this priority patch has been applied first. If there are any further issues, I will be able to address them starting Sunday evening. Thank you for your understanding. v1.26 ・Fixed a bug where Akari's Prince encounter event was not displayed. ・Fixed an issue where the New Game+ option appeared too quickly. ・Adjusted some event behaviors so that heroines remaining at the inn on weekends can trigger a wider variety of events. v1.25 ・Fixed an issue where incorrect affection values were applied during breakfast and dinner text message events. ・Relaxed the restriction on excessive time consumption in the newly added time-skip system. ・Fixed minor text errors. v1.24 ・Added a quest time reduction item (craftable on NG+ or after clearing all inn quests at least once). ・Added a time skip item (restricted in certain areas/situations). ・Added combat data carryover for NG+ and Hard Mode. ・Added an item to lower Lewdness. ・Added a virginity route lock item (prevents virginity loss for main NPCs, NG+ bonus). ・Added an instant text output button. ・Mitigated framerate drops near the royal capital gates and on the status screen. ・Relaxed Love Hotel event trigger conditions and doubled the trigger weight for some late-game events. ・Optimized royal capital lag, added logs, and increased movement speed by 100 per zone. ・Shortened Easy Mode combat time to approximately 1 minute. ・Adjusted the balance of some bandit minigames. ・Fixed a bug with the event sorting function and an issue where previous save states prevented certain events from re-triggering (Akari's late anal, low-tier breakfast, Akari underwear inspection). v1.23 ・Fixed an issue where the normal loop of the wandering merchant's appearance was blocked after fixing the infinite loop in some older versions. ・Fixed an issue where some shop items were not properly marked as "Sold Out". v1.22 ・Fixed an issue where the game would crash due to an error in the 10th event of the Akari route. v1.21 ・Fixed an issue where the final event of the Prince route could intermittently fail to trigger. ・Fixed an issue where mouse interaction was not working during the maid part-time job. ・Fixed an issue where time continued to pass while selecting options in the minigame. ・Fixed an issue where some items were not being applied in the minigame. ・Fixed an issue where the player's ejaculation volume could be displayed as 0 if it dropped below zero due to RNG, and changed the system so that ejaculation volume now increases based on the Strength stat. ・Fixed a bug where character actions/animations would not change in certain events. ・Fundamentally resolved the issue where the wandering merchant event would loop infinitely. v1.20 ・Added an item to unlock all recollections as a New Game+ bonus ・Improved and added Prince events ・Fixed malfunctions in almost all events ・Changed shop selling behavior: holding down the button now rapidly increases the quantity ・Fixed an issue where some sounds were not playing ・Relaxed the conditions for reaching the ending ・Improved the issue where some events were difficult to trigger ・Adjusted overall balance by increasing early-game event probabilities and decreasing late-game event probabilities ・Fixed control issues related to specific resolutions ・Fixed text errors related to pregnancy ・Fixed a bug where certain values would increase abnormally ・Fixed other minor bugs

eric420dylan 2026-07-15 ★ ★ ★ ★ ★

I LOVE GRINDY GAMES, but this is to much, and by grindy games i mean i have 51 hours on daily lives of my countryside XD, but this is something else, 4 hours and not a lick of corruption on these bitches, who the hell knows how many i need for an event, ill pass and you should to i imagine.

YTHoffman 2026-07-11 ★ ★ ★ ★ ★

It's not a bad game. BUT...! It's not great either. It lacks any kind of story. None of ANY characters in the game have any history. The game puts you in a world and simply tell you to 'gather 1mil gold'. But good porn games don't require a decent storyline! A good game relies on gameplay, artstyle and of course, porn. All of which were a bit lacking. Honestly, in the beginning the gameplay mechanics were really addicting! It has a time system, tasks which are fun to do, and the occasional Holocure-type minigames were really fun! It did however become increeeedibly repetetive and grindy incredibly fast.. The art is on par, and that's really nice considering it's AI assisted. However.. the attempt on animating said art turned out.. not so great. Next, the actual porn! It was somewhat refreshing and attractive in the beginning, but after you've spent hours grinding the same hidden NTR scenes, the outcome of the real scenes were really unsatisfying.. Short. Somewhat repetitive, and the corruption aspect of them didn't make much sense to me at all. If I understood it correctly, your girlfriend had to give services to one of the guys because her healing magic made him... hard? So what? Why should she cheat with you based on something like that? And the sister for some reason just kept giving sexual services to another guy, just because he gave you medicine once.. Long story short: Really addicting and impressive beginning, but eventually it just wasn't satisfying. Simply not good enough to scrath that itch.

aikyjhgd 2026-06-27 ★ ★ ★ ★ ★

The game is good if there's not much grinding in this game just to get a scene, and some gallery unlock system is a plus but it's still okay. The game have poor performance, in some places your game fps will drop a lot and when that place out of your screen it's normal again. I play this like 2+ hours and I just get bored doing the same thing. If only there's not a lot of grinding and a better game performance (atleast don't use python to make a game bro) it's gonna get atleast 5 star

Redfield5 2026-06-25 ★ ★ ★ ★ ★

I've played previous games from this developer (Time Loop, etc), so I thought I was prepared for this. But this game has a HUGE amount of grinding to it, beyond anything his past games had, to get anything sexual to start happening. You are constantly just walking from place to place, hoping you got the girls' corruption high enough to randomly trigger something interesting. Even if you do get their stats high enough, it might just repeat the same ones over and over again. While the mystery NTR aspects are good, you might be grinding 15 hours to get them to start coming up. There's also a horrendous amount of tearing in the game that you can't seem to fix. This game's just not worth it unless you're desperate.

Das Ras 2026-06-24 ★ ★ ★ ★ ★

I made the unfortunate mistake of playing this game several hours longer than I should have, and I hope to write this review to dissuade anyone else from making my mistake. This game does not respect your time. The monotonous gameplay of every day gets extrordinarily boring and the scarcity and repetition of the same scenes every couple days is extremely not worth your time to go through. There are SOME decent ntr elements here, particularly the hidden sex stuff is all rather good, but it takes so long to get to the scenes and the scenes themselves are not very well animated and also have a slight ai feel to them. There's one whole song in the entire game and it NEVER stops playing, like a hypnosis spell trying to put you to sleep. It's grueling to listen to for hours on end, and serves as a reminder of how much time you're wasting of your life playing this when you could be fapping to better games or better NTR, or even better NTR games. I can tell the developer has spent a lot of time making this, but I'm sorry to say I just don't like it. It's not worth the grind, and I say that as someone who's willing to put up with quite a hefty grind in my H games. This game just kind of sucks.

Berserk72 2026-06-24 ★ ★ ★ ★ ★

A good game. It has game direction. The art and scenes are very simplistic but game direction makes sense and its stays focused. If it was not creative it would probably be lower, but it goes all in with the crazy orgy theme.

kenshimain 2026-06-21 ★ ★ ★ ★ ★

The game sells the fantasy of an NTR inn, with moving NPCs , random encounters, and decent mini-games. Plot is very light, the isekai theme is used as an excuse to show these girls in modern clothing. The artwork looks suspiciously like AI but is not tagged. The chore quests quickly become tedious to complete. At the same time it's necessary as a way to pass time and have tension between completing chores or interrupting random NPC encounters. I've encountered at least one bug showing double actors in the same location (knocking on door while she is standing outside). The game attempts to improve upon other random encounter games like kegani lab titles, in a sea of walk to heart to watch scene RPGM slop, this has the heart and goes in the right direction. It's not low effort or low quality, the dev tried and delivered their best version of a random encounter type game. I look forward to their future works

SaturnianJackoLantern 2026-06-17 ★ ★ ★ ★ ★

Dev clearly knows how to write NTR - at least for the beginning sections I could get through. But the gameplay is just so unbearably repetitive and clunky that I can't stand to spend the time to get through the whole thing. I truly think the game would be better served if it were your standard fare NTR RPGM game.

Oyajin 2026-06-15 ★ ★ ★ ★ ★

[Review based on game version v.1.17] It's a grindy game, but I believe the Story and CGs are quite rewarding. Another important and good aspect of the game is that it can fit all "NTR standards" people may have, because there're 3 different villain types: The muscular black guy, the fat middle-aged guy and the "good looking" blonde guy. For most people, I recommend using guides, use the "easy" settings and maybe even use some cheats to skip some parts of the grind.

basch12 2026-06-14 ★ ★ ★ ★ ★

I started playing this with low expectations but betting on the chance it would surprise me and it did. This game should be the standard experience. It nails the fundamentals. - NTR involves established relationships of consequence - corruption starts innocent and progresses gradually - the girls are dressed the part, no early fanservice that undermines the core theme - dialogue is short and not an obstacle It does the typical oblivious MC thing but no one has invented a better premise. There is a game loop where you perform menial chores and view the hidden NTR content along the way. The chores are tedious, but can be sped up with the broom upgrade. The loop is efficient, delivering a consistent succession of content separated just a few minutes apart. What can I say I went into this expecting a low quality game and it is low quality. But not low effort. The art is okay. The animations are subpar. The story is dumb. But it makes up for it by delivering a solid core experience. The content is good and plentiful. This game is like Chinese takeout with a coke. Hidden NTR fans are going to eat good.

Comrade BLin 2026-06-12 ★ ★ ★ ★ ★

- The scenes are quite good, the story is interesting enough, the devs know how to build up tension + many sneaky moments. - AI generated, time consuming mandatory mini game with not much reward ( i find no joy in playing it), corruption progress happen too quickly + you have no clear way to know how far they have gone ( there is an affection bar but at 13 and her thought is: "he's a nice guy", they're already cracking so i have no idea) => An average 3/5 NTR H-game, should be the standard for every other game with the same genre.

Sam-oussa 2026-06-10 ★ ★ ★ ★ ★

This is one the best NTR game in the market, at least if you're into slowburn hidden sex NTR simulations. The artstyle is clearly above average, especially for AI-assisted stuff, it looks almost hand drawn to me with a little nostalgic flash game touch. The animations are really good and there's a lot of them, my favorite is the mouth cleaning animation, I don't know why. The main issue is the pace, but the dev makes a lot of updates to fix issues and it's an indie game made by one person, so I think we can be a bit indulgent on this one. Personally, it doesn't bother that much, I don't mind cheating (not in the NTR way) and I like experimenting with the values in the save files. Don't forget the new cheat items in the equation too, it's clearly a game changer to make the experience 10 times less tedious. If we compare it with its main competitor "Kegani laboratory", it's not even comparable. Iseaki NTR Inn is not perfect, but it's far from being lazy. I'm very curious to see more in the future, a DLC or even a new game close to this will be great.

Extremepants 2026-06-09 ★ ★ ★ ★ ★

Ultimately just too much constant grinding. Some of it is to facilitate scenes taking place, but it would be nice to have faster movement or items to instantly complete (or not do the bandit fight altogether) in order to just get to the point. The art is better than average but the H-scenes are super short in comparison to the grinding it takes to get there.

Synapse. 2026-06-08 ★ ★ ★ ★ ★

Amazing for slow burn full immersion of your girlfriend getting stolen over the course of months instead of minutes. Terrible if you hate grindy games and this one is a grindfest nightmare. Art is peak, voice acting is decent. Hidden sex scenes are top tier *chefs kiss!*

redlupa 2026-06-08 ★ ★ ★ ★ ★

It's not inherently a bad game. The structure is there but feels incomplete which made it a disappointing experience. And some of the things I noticed made me think this was intentional. If that's the case then the dev is a S class cunt. For instance: There are 2 girls you are trying to avoid getting fucked and 2 guys at the Inn you are staying trying to fuck them, 1 for each. Girls have liking/attraction stats for the both of the guys which makes you think same guy will go after the other girl too but same guy only goes for the same girl which makes it redundant for that stat's existence. There is a shop in the game and there are certain items you can't buy for some reason but the way the things are set in the game, it makes you think you will be able to buy them later in the game. Turns out you were never supposed to buy them in the first place. Why have them shown then ? Simple mention of them would have been enough. Girls have development stats for their body parts like anus, pussy, boobs, mouth. One of the girl's anal development never progresses because there's no scene for it in the game. Same question then: Why have it in the first place? Again with the stats, girls' ovulation days are indicated in their bios and there are mentions of pregnancy. You would think somewhere along the way there will be pregnancy stuff in the game. Guess what? Nobody gets pregnant in the game. WHY IS IT THERE THEN ?! And so on so forth. There are many stuff like this in the game that always made me think if I play and progress further into the game I will see something related to those stuff. Indications are there but nothing happens. Now if that happened only few times I would've have thought yeah the dev is new to game making and must've missed some details. But it's everywhere in the game. These stuff have been put there to have you keep playing with the expectation and hope to achieve something. Intentional. Which is a very cunt move. There's grind. Bad kind of grind. You do the same mundane things over and over again for a long period of time and those things take time to do. Not just point and click. You are literally doing chores throughout the game. Go there clean this go back to over there then wash that. Walk up to this spot pick stuff then drop it over to that spot... Why there's so much traversing? There isn't much to look at anyway. This isn't some AAA open world exploring game. And in my opinion the rewards or scenes you get at the end of that grind is unsatisfactory. Slow burn my ass there isn't enough content in the game worth all that hassle. Oh there's a 3rd guy who was supposed to be going after the girls. But that path in the game is bugged even if that wasn't case it is easy to miss that path and there is not enough guidance informing you about that path. Girls are attractive, H scenes are passable, the NTR vibe is there but it always felt like something was missing. Overall game doesn't respect your time. You put hours into playing with minimal results and worst part is that my impression is, it was intentional. Maybe this wasn't a full release. Maybe stuff will be added later into the game with patches. Game definitely feels far from being complete. Who knows? Maybe this was the intended way. Which is a very... cunt move.

LordBaka 2026-06-08 ★ ★ ★ ★ ★

For the first time in a long time, a game made me feel that sweet slut I'm chasing in NTR content. There are technical issues, that's true. Despite a number of obvious technical problems, the game is genuinely engaging and fun to play. Especially if you like it when your wife's infidelity is seemingly hidden from the character (though you notice everything). Let me say right away: grinding in games doesn't put me off, and I enjoy playing slow-burners like "I Am Not a Leader" by Kegani Laboratory. So, if grinding and a few bugs don't bother you, you'll love the game. Yes, there are some annoying things (like the additional interface on the phone that only opens with keyboard shortcuts and can't be opened with the phone buttons), but those are minor issues. If NTR is for you, give it a try; you won't regret it.

asSlapper 2026-06-07 ★ ★ ★ ★ ★

A very great NTR game with plenty of hidden NTR scenes where the player can interact with (which is very lacking in most NTR games ). Being able to view the full picture, where the MC is doing his slice-of-life activities while getting NTR'd right under his nose, is a sweet idea. For the design and art, the game looks really nice and the girls are very cute! The minigames can still be improved though, especially the bandit one. Spoiler: Pacing is slow, but You can easily bypass the slow burn and jump into the scenes just by editing your save file.

EnterYourNameHere 2026-06-06 ★ ★ ★ ★ ★

Slowburn netorare game with hidden sex features. Pretty much all scenes are animated. But the worst of this pretty good game is the annoying minigame which you have to do every second day to grind the few "ntr" points.

murgichor 2026-06-06 ★ ★ ★ ★ ★

Considering this Dev's first games, its Great. The story and pacing is pretty lackluster. But I see the vision, if this is the worst that the Dev can produce then I have nothing but High Hopes for their future projects.

instafail 2026-06-06 ★ ★ ★ ★ ★

Really great hidden NTR game. Stuck in another world, you need to earn money and manage resources while protecting your girlfriend and sister from unscrupulous guests of the inn. You'll get warnings of impending harassment, and have to interrupt it. Whether or not you are able to pull your heroine from the bulls depends on their (slightly) hidden h-stats stats (estrus, lewdness, & corruption). By having 2 heroines (your girlfriend and your sister), the game forces you into difficult decisions about which one you will protect. But, without careful management of your resources, you might end up losing both of them. The hidden NTR has some really exciting erotic themes & mechanics that are incorporated into the game world successfully: h-statuses (womb tattoo, drug dependency, etc), gradual stat corruption, leaked photos and videos you can find (with identities scrubbed), and using a phone to interrupt events or listen in to unsuccessful interruptions (the phone system could be expanded even more, imo). For the niche enjoyers, there even seems to be pregnancy as a mechanic instead of a bad end. This is obviously マシュマロトラップ 's first game - many of the 'minigames', like the periodic Bandit attacks on the inn, feel like small projects the dev made while they were learning. But, overall, there is an extremely well-planned and coherent vision that ties all of these elements together. Yes, a lot of the walking around and chores feel unnecessarily tedious. Overall pacing (walk speed, spacing between points of interest, minigame completion time) should to be speed up around 30% to feel like a grind. My estimate would be a little over 10 hours for a full playthrough in the current state, with h content ramping up within the first 30-45 minutes. In it's current state, there are some (non-game breaking) bugs that cause confusion. Characters in 2 places at once Heroine status screen not displaying an accurate location Heroine breaking post-event and not updating for the rest of the day These bugs make it unclear if the NTR is ultimately avoidable or not. The intent seems like successfully interrupting an event is probability based (ex. lower chance to interrupt if you let estrus get to high). But, with the existence of these bugs, some events are completely unavoidable with no warning. Overall, I am extremely enjoying this game, and have great hopes for this dev's future releases. I am going to wait for a few patches to come out before attempting a virgin/pure love playthrough with at least 1 heroine, but it is still worth trying in it's current state, because the mechanics are complicated enough that you wouldn't be successful your first attempt, bugs or not. Enjoyers of hidden NTR and mechanical h-games, this is easily one of the best releases games since Nebel.