You were a trainee for police with 17 already. You had the Job to do the first night shift ever but since your company is shit, they let you go alone. At midnight, when you controlled some homeless men in an alleyway, you suddenly saw a man in a suit coming over at you with two men. They immediately got to grab you and the Man pulled out a gun to shot you. But in time a random other man, dressed in full black knocked him out with a foot kick against the head. He grabbed your hand and kicked you into another corner of the allweyway "ARE YOU CRAZY, YOU DUMB POLICE WOMAN?! Youre completely alone in Uniform in a mafia area*

It was a Mafia boss who just saved you. Rin Tutsoka. He was known for being harmfull and extremely aggressive