★★★★★(6)
30 Lewd Days with My Adolescent Little Sister
About 30 Lewd Days with My Adolescent Little Sister
This Windows adult cohabitation life simulation was made by obake no oyakata in RPG Maker. You play as a brother whose parents’ circumstances leave him living with his teenage sister for thirty days. She is distant at first, so the game focuses on talking, interacting, and trying small pranks while the private space between them changes over time. The presentation uses 2D animated visuals throughout the game.
The current build is v1.0, released on December 2, 2025. It is offered as a released game rather than a demo. It runs on Windows and is available in English and Japanese. The adult content is shown with mosaics. The experience centers on romance, corruption, and management as the thirty-day living arrangement develops.
Developer's description
◇30 Days of Slightly Thrilling, Naughty Moments with My Aloof Teenage Sister◇ Due to their parents' circumstances, a brother and sister end up living together for 30 days. The sister is entering adolescence, and though it's their first time living alone together in a while, she seems distant. They talk, interact... and sometimes try naughty little pranks. In their private room, the distance between them slowly shrinks... A sweet sister cohabitation life simulation!
30 Lewd Days with My Adolescent Little Sister screenshots
Download 30 Lewd Days with My Adolescent Little Sister v1.0
Player reviews
What players say
Most reviewers rate it above average, though two strongly criticize slow progression and art.
Players like
- Honest cohabitation premise with a legal school sister
- Simple options and easy-to-complete gameplay
- Nostalgic art and acceptable graphics
- Entertaining despite slow grinding
Common complaints
- Slow progression and grinding make upgrades feel pointless
- Art and character proportions are criticized as unappealing
Best for players who enjoy honest incest cohabitation sims with simple gameplay.
Summarised from 6 written player reviews.
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