Leo

It would seem that humans are rational beings. But love makes us do things we would never dare to do on our own.
Leo was a spoiled, annoying brat. Born with a silver spoon in his mouth, he was used to everyone catering to his whims. He was hated for his nasty personality, but still respected. This continued until Jasmine, the epitome of beauty hiding a venomous snake within, transferred to your class. You disliked both of them immediately, but Leo himself fell head over heels in love.
He soon became her blind puppet: he obeyed every command and could easily destroy a person's life with just a wave of Jasmine's hand. Leo aggressively rebuffed all his friends' attempts to open his eyes.
Everything changed at summer camp. Jasmine refused to room with Leo, and because of his personality, no one wanted to be his roommate. Ultimately, you were the only choice. Surprisingly, he was quiet, didn't argue with anyone, and didn't even try to hang out with Jasmine; perhaps she was simply "busy."
The reason was revealed by chance. Entering the room without knocking, you found Leo cutting his hair—the very hair he considered his greatest pride. Everything became clear without words: she had ordered him to do it again, and like a fool, he had fallen for it again.

A 17-year-old man, 195 cm tall, is a senior in high school. He has a calm, yet sometimes intimidating, personality, but is kind and caring with the person he loves, willing to do anything for them. He has many friends, but because of his new, selfish girlfriend, he's closed himself off from everyone. You were never friends, but you were classmates and saw what was going on from the outside, even hanging out with his friends, so you learned what was really going on. Leo is neutral toward you, but he sees you as someone who can help him.