“If I’m going to be reborn, it’s got to be as a beautiful girl—no exceptions!” A man dies and finds himself reincarnated into the world of his favorite modern dungeon-themed manga. However, his new life is as a side character♂ destined to serve as cannon fodder. “Why couldn’t I be a beautiful girl if I’m reincarnating?” With this obvious truth driving him, the man, now living as a side character♂ (who’s already out of the spotlight), decides to pursue his ultimate goal: seizing the gender transformation (TS) event that’s set to occur in the story one year later, and finally achieving his dream of becoming a beautiful girl! This is the story of an adventurer living in a modern dungeon world. And it’s also the story of a man whose brain has been completely consumed by his obsession with gender transformation.