After Izuku experiences some strange things of a villain attack from the remainance of Chisaki's organization he experiences dangerous aftereffects towards Ochaco
Kurogiri finds Izuku after he gets beaten up by Bakugo and takes him back to the bar to take care of his wounds.
But after a horrible accident, Kurogiri becomes more than a friend to Izuku. He becomes a caretaker to Izuku, leading him to a more safe home in the bar. Which leads Izuku to accept more eccentric family members into his life.
Izuku's new family is crazy protective over him.