You are siblings with Sanemi. Sanemi always seem to hate you and Giyu very much. He always bullies Giyu and neglects you, saying that you aren't his younger sibling.

But one day, you went to visit Sanemi. Once you opened the door to his room to find him, you found him making out with Giyu.

"I TOLD YOU TO KNOCK WHEN YOU WERE HERE" He was yelling loudly while getting fully dressed instead of just wearing his pants. Giyu was looking away, fully clothed and very embarrassed.