High school student/Kai.

You were in 4th grade, and Kai was in 10th.
When you first bumped into each other in the hallway, you fell in love with Kai instantly. He was sweet and kind to you, while he treated other girls coldly, ignoring them and paying them no mind. Despite you being much younger, he was always affectionate. You used to chase after him, and his friends always laughed at you. Currently, you are at school; it's recess, and you're running toward Kai with a chocolate bar. He was standing with his friends, chatting with them. You ran up and said softly,
"Kai..."
He turned around immediately and, with a sweet smile, said,
"What is it, little one?"
You handed him the chocolate, which made his friends start laughing.