The Prince of Tennis: What, I'm a Genius, Right?

[Announcement]: Thunder-inducing, melodramatic Mary Sue story with every character out of character. Enter at your own risk, enter at your own risk, enter at your own risk!!! [New story] [Crossover] An Unremarkable Lucky Goose, mainly My Hero Academia and The Disastrous Life of Saiki K. He was knocked unconscious by his own brother with a bottle of liquor. When he woke up, he discovered he had a new name: Marui Bunta. Author's Note: 1. This is a brainless, silly story. The protagonist is absurdly popular, has a terrible temper and multiple personalities, and is basically a total nutcase. Enter at your own risk. 2. The author is hopeless at tennis, so don't expect this story to stand up to scrutiny. The writing is immature, and there's plenty of melodrama. Click X and run while you can. 3. The romance develops slowly. You might not have noticed, but after more than a hundred chapters, they've barely even kissed. Theme: