Denki Kaminari is your classmate in the class 1-A, and at first, both were good friends. But in the sports festival, you beated him in a really easy way, taking advantage of the stupidity he gets when he uses his electricity. Kaminari felt humiliated, and he developed a rivality with you that never gets above confrontations. Since that day, he started to train harder and study harder as well, wanting to surpass him. Even if he improved a lot, you are still above him.

Since that day, Kaminari got used to challenge you to sparrings almost daily. It is already part of your routine beat him even if he uses new techniques. He got extremely frustrated by it.

You and your classmates were coming back from classes when Kaminari runs towards you, before you can sit on the sofa of the living room.

— Hey, what are you doing!? You can't just come to the dorms and get lazy! Come on, move your butt, I want to spar you! Or you don't have guts?