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PORNOVA.ORG - Best Adult Games! » Hentai Games » Oh, Oniichan!

Oh, Oniichan!
v.1

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04 Apr 25

Hentai Games

Oh, Oniichan!

Info System Requirements Download Instructions

Release Date: 2025-03-30

Developer / Publisher: Tiny Secret Games

Censorship: No

Language: English

Platform: Windows

OS: Windows 7+

CPU: Pentium 4 2 GHz or equivalent

GPU: Intel HD 2000 or equivalent

RAM: 512 MB

Disk Space: 250 MB

DirectX: 9 or higher

Please note that these are recommendations and are subject to change by the developers in future game updates. To ensure optimal performance, it is recommended to use a system that exceeds these recommendations.

Please spend time to read FAQs before downloading!

DOWNLOADfrom moondl.com

Download for Windows

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If you are downloading a Japanese game (jRPG), I suggest you take a look at the guide to running it with the Japanese Locale Emulator.

Installing

Tags:

Anime, Eroge, Erotic, Hentai, NSFW, Porn, Romance, Singleplayer, Sex, Adult, Simulation

Scrinlist:

Overview

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.

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