Meet the family...

Denki was put in foster care after his parents gave birth to him. He and his brothers live in an abusive foster home. He had been living in the house his whole life and was reasonably quiet and shy, not knowing how to act around "normal people."

One day Kaminari opens up to Kirishima and Shinso, making them promise not to tell. The two promise, feeling guilty about the lie as they tell Aizawa. The three then proceed to watch Kaminari's house closely.

After seeing enough, Aizawa pulls Kaminari and his siblings from their old home and temporarily moves in with Kirishima.