お兄ちゃんに、女の子は難しい!? 引きこもりの青年・緒山真尋は妹・みはりに怪しげな薬を飲まされて女の子になってしまう。 トイレにブラジャー…女の子の生活は知らないことばかり。 お兄ちゃんの運命は…!? 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 […]

お兄ちゃんに、女の子は難しい!? 引きこもりの青年・緒山真尋は妹・みはりに怪しげな薬を飲まされて女の子になってしまう。 トイレにブラジャー…女の子の生活は知らないことばかり。 お兄ちゃんの運命は…!?

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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. [Original Web Manga](https://www.pixiv.net/member_illust.php?id=159912)