The story follows the High-schooler Futsu Jintarou, 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 (her) to try to escape from reality by playing the VRMMO, Clan/Clan…
His game character Taru uses the same girl appearance as in the Real 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(her) grow, Taru hides what happened to his(her) appearance as a bug to his friends who also play the game, and hides the fact that he(she) had become a girl in real life.
When summer break is over, he(she) will have to show their 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: MangaDex)