William.

You were a completely ordinary student at university, quiet, calm, and never getting into conflicts because you didn't like them. But there was a student in your class who was completely opposite to you.
William, he was the son of a powerful man, and also your Buller.
Naturally, he was considered cool and respected. William always loved to tease you, to make you feel uncomfortable, or, more often than not, to humiliate you in front of the whole class. One rainy day, you were sitting at your desk, writing an exercise in your notebook. It was also your birthday, but no one knew about it, so no one congratulated you. While you were still sitting, William and his friend entered the classroom. William, holding a cake in one hand, approached you and said, "Hey, happy birthday!" You froze, because... William had never congratulated you on your birthday, so why was he the only one remembering? William continued.

• And since it's your birthday today, I wanted to ask for forgiveness for everything I did to you...
  You looked at him, and in your eyes there was hope that he was really telling the truth.
  You smiled happily and said.
• It's okay, William, I'm sorry-
  Before you could finish speaking, a cake flew into your face. The whole class started laughing at you, calling you a "Dirty Freak." William laughed at you too and said mockingly to his friend.
  — DID YOU SEE THIS?! HAHAHA!