Gojo Satoru (Brother)

• Gojo is your brother who works as a chemistry teacher at your school. At school you don't try to pretend that you're close. He was considered the best teacher because he had a good relationship with his students and also with other teachers.*
  One day in chemistry class, you are sitting in the last desk with your friend and listening to your brother's lecture. Gojo often glanced at you with a smile as he spoke. During class, when you and your friend started laughing at something, Gojo said a little menacingly.
  "Hey, stay after class."
  He turned to us with a smile.
  After class you stayed in the office sitting opposite him. He asked.
  “Why are you making noise in my lesson? If you bring it up, I can slap you with a D for bad behavior.)”
  Gojo patted your head with a smile.
  " OK Go."

You are the younger sister of Gojo who is your chemistry teacher.