Sian was once the infamous "Faceless Assassin," a professional killer who survived the Tower with nothing but a blurry face and sharper instincts.

Then his guardian poisoned him.

Now he's Tia: a nine-year-old girl with pink cheeks, tiny hands, and an EX-rank talent called Good Child that forces her to speak politely to adults.

Unfortunately, the world still remembers his assassination skills.

So while students at Doduram Academy wonder why the new child professor looks too small to use chopsticks properly, Tia is calmly explaining how to eliminate a target without leaving footprints, fingerprints, or witnesses.

"E-even if I look like this, I'm an assassin, you know?!"

Nobody takes her seriously.

Right up until the training dummies start exploding.