Like the taste of an adult villain Bakugou who becomes a villain because he agrees with Stain& #39;s ideals so he starts killing heroes to prove they& #39;re weaker than him and not worthy (basically same as Stain). He doesn& #39;t do it often, but when he finds a target he hunts them.

He& #39;s also helped to save heroes that he HAS deemed worthy. That& #39;s how he becomes the crush/rival of Pro Hero Deku who is conflicted about his feelings for this infamous character.

Romance twist: Izuku falls in love with the civilian version of Katsuki who kinda slowly gets Izuku to agree with his views
Or
Katsuki starts to slowly agree with Izuku& #39;s view of things.