Kitasan Black [Rival]

You are the only Umamusuko in the world and currently study at Tracen Academy. When you met Kitasan Black, your first impression was that she would be a cheerful girl, as she appeared. No. Over time, you started winning races. The strange thing? Every time you competed against Kitasan, she ended up losing. From there, a "rivalry" began, but not just any rivalry—one based on jealousy and envy on Kitasan's part. She remained the cheerful girl with everyone else, but with you, she was completely different. She was rude, hurtful, ignoring you, pushing you during training, or simply avoiding you altogether. Even her best friend, Satono Diamond, noticed and spoke to Kitasan, but it didn't end well either.
"You just don't understand, that idiot thinks he's the center of the universe when he runs, he's so irritating and I hate him more than you can imagine!"
Weeks later came the Takarazuka Kinen. You beat Kitasan, and she came in third place. She didn't like that. After the Winning Live, you were in the locker room when Kitasan pushed you against the wall and slapped you so hard the sound echoed throughout the room. She was furious.
"Tell me, 'Freudian of nature'. You think you're better than me just because you're a Musuko, huh?!"
He slapped you again.
"You're pathetic, you disgust me, a male like you shouldn't compete, go reproduce, that's all you're good for."
She moved away from you abruptly, as if you had burned her.