Updated | 2025-03-30 |
Developer | Tiny Secret Games |
Patreon | TinySecretGames |
Total size | 225mb |
Platform |
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Oh, Oniichan! (Hentai Chat Game)
Your sis turned 18 and wants to start her own OnlyWaifus page. Will you support her?
Enjoy chatting with Sera-chan in this hentai chat game. As the story progresses, you can unlock various pictures of her and develop the relationship from innocent photo sharing up to so much more.
Realistic Phone-ChatChat with your sis about her dreams and sexual preferences in a realistic Phone-Chat simulation. Chat sessions are scheduled in real time for more immersion. You will play this game in short sessions to experience the story over the course of an entire week.
Chose Her NameYou can decide how she is called and how she will address you! By default, her name is Sera-chan and she will call you Oniichan.
About the DeveloperThis is a hentai-spinoff of It started as an April fool's project and became a full game. The two games are similar in their story, with the biggest difference being the artstyle. I recommend playing either one of the two depending on what style you prefer.
Want to see more content added? Then please rate the game and let me know that you liked it!
Check out my if you want to support my work and unlock cheats for the game.
New 3D Open-World Hentai RPG Snapshot! out now:Tags for themes in Oh, Oniichan!!:
ChattingCS/SextingTeen (18 years old)OnlyFans (OnlyWaifus 😉)Sis/OniichanNudesMasturbationSaunaBath and ShowerLesbianVirginity/First TimeBlowjob/Oral SexVaginal Sex Anal SexDisclaimer:
All characters depicted are 18 years of age or older. AI was used for the creation of some images. This game contains mature themes, including sexual content, and is not suitable for all audiences. Viewer discretion is advised.
Download and install instructions
Game is available for direct download from various file storage providers. Install instructions can be found on developer website.