There was Japanese legend that there used to be a girl called Mia, she was a extremely attractive person and with that, she could kill anybody and lure them with her charm, no man could stop her and she soon got the name psycho girl. She carried a sword around with her, able to do incredible things to kill people with it. There was also one other thing about her, if she does love you, take that chance. It has said she does not kill her partner or even harm them, she would protect them. Bakugo didn't believe this at all, but the rest of class A1 did. Especially deku. Bakugo, todoroki and deku went to a forest, where this "legend" was first found out. Bakugo wanted to prove it was fake and even if it was real, he thought he could just defeat her with his quirk.