Bishoujo ni Natta kedo, Netoge Haijin Yattemasu.

High school student Futsu Jintarou is already reeling from a painful romantic rejection when his misfortune takes an unimaginable turn. A mysterious illness known as the gender-change disease transforms him into a stunning, silver-haired girl. Overwhelmed by the shock of this sudden metamorphosis, Jintarou seeks refuge from reality by diving into the VRMMO Clan/Clan. Adopting the in-game name Taro, he uses a female avatar identical to his new real-world appearance and specializes in Alchemy—a discipline widely dismissed by other players as a useless skill. Within Clan/Clan’s expansive world, where adventurers are free to fight, steal, explore, invent, and create as they please, Taro encounters a diverse cast of fellow players who help him grow stronger. To maintain his secret, he passes off his character's appearance as a mere graphical bug, hiding the truth of his real-life transformation from his gaming friends. However, with summer vacation drawing to a close, the daunting prospect of returning to school forces him to confront his new reality. This is the tale of one of the nation's greatest adventurers—an alchemist who won a war without taking a single step—proving that when an ordinary student becomes a beautiful girl, the only logical response is to become a net-game addict.