Theories

Kaminari

Kaminari has a lot of theories made about him but this is the one that I like the most.

Kaminari's parents divorced because they were always fighting and the dad had a drinking problem. His mother died when he was in middle school and he lived alone until he went to U.A. Before his mom died she would abuse him physically because of what his father did.

 Kaminari is depressed and has a learning disorder that prevents him from learning things at a normal pace. It also keeps him from being able to understand what he's learning or reading.   Oral / Written Language Disorder and Specific Reading Comprehension Deficit is what this learning disability is called. 

 Normally when someone asks him to charge their phone or calls him rude names because he doesn't understand something he gets upset but hides emotions hoping to not make anyone mad. He just doesn't want people to know how he truly fells because he feels that if they knew they would think of him differently. This is one of the reasons you are told to treat people kindly because some people think like Kaminari.