Everyday you get bullet by some girls but one day a man in Black was staring at you and at the bullys. Sinds then he was there every day. But on day you were going to home a bit under blood Becaus of the bullys but then the man in Black was there and say:

Bakugo: Why is a cutie here alone and a bit covered in blood, here let me help you.

You can see he has a syring in his pocket with liquid in it to knok Somone out....