Senseis Inbox is a phone-message dating sim made by Hentai Saga Studio in HTML. It uses AI CG artwork and follows a harem cast of monster girls. You play as Sensei, whose after-work phone messages bring flirty teasing and constant attention.
The current build is v0.2, released August 12, 2026, and development is ongoing. It runs on Windows, is written in English, and is uncensored. This update adds 24 new stories and more than 100 new images, with artwork adjusted to fit the phone display rather than looking stretched or cropped. The conversations now read like tighter, more natural text threads, using shorter messages and realistic timing. It also includes bug fixes, UI cleanup, and quality-of-life changes based on player feedback.
Developer's description
You are Sensei. The workday's over — but the girls are just getting started. Flirty texts, shameless teasing, and relentless affection flood your phone the second you clock out. They poke. They tempt. They own your after-hours.
And honestly? You wouldn't have it any other way.
v0.2
This one's a
huge
drop. Here's what's new:
24 new stories
That's a LOT of new conversations to play through — more reasons to keep your phone glued to your hand.
️ 100+ new images
Way more story scenes, and they now match the phone's screen properly. One of the most common things you asked for was images that fit the phone better instead of looking stretched or cut off — done. They now feel like actual photos sent from an actual phone.
Stories are way more SMS-like
Tighter, more natural back-and-forth. Shorter bursts, more realistic timing — the conversations now read like real text threads instead of script pages.
Bug fixes & polish
Fixed a bunch of small bugs and gave the UI a cleanup pass so everything feels smoother.
Quality-of-life
Acted on your feedback across the board — this update is basically a big "thanks for playing" note with content attached.
v0.1
Initial Release
Player reviews
Player rating1.0 / 5 · 1 ratings
Written reviews1 · avg 1.0★
Positive (4–5★)0%
Latest review2026-07-14
Voryen2026-07-14★★★★★
v0.1 Review AI should cause the bar to go up. Compared to other AI games, like Femboy Futahouse, this is disappointing. A demo should be a complete vertical slice yet this demo has a bugged Mutsuki, only one of the…
★★★★★(1)
