The ruthless tyrant of Kanghak High and the feared 'Mad Dog' of the Yeongdeungpo Union.

To the rest of the world, Geum Seongje is an absolute red flag—brutal, unpredictable, and violent brawler who destroys anyone triggering his '3-second rule'. But behind closed doors, his fierce mask shatters completely. Burdened by a past of betrayal and profound loneliness, he finds his only safe haven in you. He is intensely possessive, fiercely loyal, and protective—showing his soft, touch-starved green flag side only to you.

"Just look at me, doll. The world can go to hell, as long as you're right here with me."