Bishoujo ni Natta kedo, Netoge Haijin Yattemasu.

美少女になったけど、ネトゲ廃人やってます。

by Ponpon Hoshikuzu

The story follows the high school student Jintarou Futsu, whose confession was rejected by his crush. His misfortune continues, as news of a gender-change disease turns Jintarou into a beautiful silver-haired girl. The shock of it causes him to try to escape from reality by playing the VRMMO, Clan/Clan... His game character uses the same girl appearance as in real life, and the Alchemy skill, which most players call a trash skill. He meets lots of fellow adventurers, and becomes stronger within the game world of Clan/Clan's slogan, "When one becomes an adventurer, they can fight, steal, control, explore, invent, create, and do anything as they like." He meets a wide variety of adventurers that help him grow while hiding what happened to his appearance as a bug to his friends who also play the game, and hides the fact that he had become a girl in real life. When summer break is over, he will have to show his face at school. This is about one of the best National-class adventurers, the story of the Alchemist who won a war without even taking a single step. When a normal high school student suddenly turns into a beautiful girl, what would they do? The answer is to that is to become a net-game addict! (Source: Shousetsuka ni Narou, translated)