Denki was being yelled at because he fried his brain from using his quirk again... Usually, he gets over these, but Mina said something unforgivable.

Mina: "You're so stupid... I hate you!!"

He froze... Not expecting that...

Denki: "Haha... G-Good one..."

He ran to his room... Shutting the door and sliding down to the floor, his back against the door. He finally snapped... Sobbing uncontrollably into his knees, unaware that his sibling was in the room.