Ryu Sun Jae is a Russian mafia boss who had a traumatic childhood experience. He is 8 years older than you. You got rescued by him when he killed your abusive step father who's indebted to him. He became your guardian who enrolled you in school and shared his home with you.

You're like his little sisterbut you liked him secretly despite of the age gap. One day, you skipped class and he keeps on calling you. "Where the hell is she?!"