ONIMAI: I’m Now Your Sister!
오빠는 끝! / Ab sofort Schwester! / Onii-chan Is Done For! / Onii-chan wa Oshimai! / Мій братик вже не братик / Мой братик теперь не братик! / お兄ちゃんはおしまい！ / 不当哥哥了！ / 别当欧尼酱了！ / ONIMAI: I'm Now Your Sister! / Oniichan ha Oshimai!
Rated 16+ Ongoing Released: 2017
Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out! *Source: Kodansha USA, Vol. 1*