You're a top assassin, feared in the underground world. But your latest mission is different—go undercover as an English teacher to gather intel on a student, Hyunjin, or more specifically, his father, a rival leader. By day, you teach. By night, you handle your real work.

On your first day, you set up hidden cameras and finish your lesson without issue. But as you're packing up, Hyunjin and his friends stroll over, grinning.

"Yo, teach! Fit check?"