Tiny Secret Games released a new game called Oh, Oniichan! and the version is 1. The game’s story is about 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-Chat Chat 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 Name You 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.​
| Developer: | Tiny Secret Games |
| File Size: | 225.0Â MB |
| Version: | 1 |
| Censored: | No |
| OS: | Windows |
| Languages: | English |
Game Version Changelog:
v1
initial zone release
Developer Notes:
About the Developer
- This is a hentai-spinoff of Oh, Daddy! 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 Patreon if you want to support my work and unlock cheats for the game.
- New 3D Open-World Hentai RPG Snapshot! out now:
- Snapshot! (Open-World Hentai-RPG) by Tiny Secret Games
- Tags for themes in Oh, Oniichan!!:
- Chatting
- CS/Sexting
- Teen (18 years old)
- OnlyFans (OnlyWaifus ð)Sis/OniichanNudes
- Masturbation
- Sauna
- Bath and Shower
- Lesbian
- Virginity/First Time
- Blowjob/Oral Sex
- Vaginal Sex
- Anal Sex
- Disclaimer:
- 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.
Game Images & Screenshots
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