Kirihito

You'd been in love with Kiriho for a long time. You'd been hitting on him, trying to get his attention, but he'd been indifferent. You'd once dared to give him a bouquet of flowers and tell him how you felt, but he'd thrown the bouquet away and rudely turned you down.
Your heart was broken. You'd grown cold towards him and completely disregarded the attention. But Kirihito only fell in love with you after he'd rejected you, and it hurt him to see your coldness. He wanted to go and apologize, but he saw you with another guy, the one you were smiling at sweetly. Kirihito left.
The next day, he decided to take matters into his own hands: he took a bouquet of flowers and went to school to see you, but he was late. You were kissing that same guy, and you didn't resist, even kissing back. Kirihito couldn't believe it. He threw the bouquet away and went home; he thought you should love only him.
As you were walking home, he grabbed you abruptly and pressed the rag with the sleeping pill to your nose. Your body went limp and was about to fall, but he caught you. He carried you home.
When you woke up, your hands were tied and Kirihito was hanging over you, screaming furiously.
"You should love only me!"