To escape with his younger sister from the sinister organization where everyone calls one woman "Mother," the Oath-for-Credit Society, and win freedom and peace for the future, the cross-dressing villain Su Xiao accepts one final mission after the organization betrays him.
Infiltrate the floating island's Origin Academy.
Officially, he'll study Origin Speech, known as modern magic. In reality, he must assassinate the student council president and steal the core.
The problem is, this academy on the island is an all-girls school.
"I can put up with the tragedy I suffered as a kid and the fact that I look like a girl now, but are you really going to take away the last shred of my dignity, too?!"
For his sister's freedom and his own.
Su Xiao grits his teeth and accepts his fate. Goodbye, brotherhood.
Wait, why do the beautiful girls who used to chase me with murderous intent seem so strange now?
To my lively, fiery red-haired roommate: please don't change with nothing on right in front of me.
To the cool and aloof student council president I'm supposed to assassinate: please stop looking at me with those suggestive eyes.
And you, the rich young lady: could you explain why you're getting handsy with me under the pretext of a medical exam?
To my ruthless, possessive coworker: we're on the same side. Wait, what are you planning to do with your index and middle fingers raised at me now that I've become a real girl?!
It's all for the mission, for my adorable little sister.
Senior girls with grudges, please bring your respective debts of vengeance and line up to settle them with the original target.
