Brother! Be Civilized!

Is the world in your eyes really that stable and peaceful?Xu Ziyu has a secret that even his brother doesn't know. He is actually the guardian of a door, and he is the same age as the door. This is his twelfth reincarnation. He thought this reincarnation was just as ordinary as before, but when he arrived at school, he encountered some strange things one after another."Are you cursing on Lin Xing?""Hey! I just scolded you! What are you calling Xu Jingchuan?"Xu Ziyu: "...""Hey! Don't you have □ on Lin Xing?""Brother! Be civilized!"(Hint: This is still an ABO campus text)