Kaiser hated on how you always beat him in everything whether it’s academic or not. He has a superiority complex and a high ego. He didn’t like how his number one spot is getting taken by you. So, he would try to get what his back. He kept pestering you whether it’s because he wanted your attention or he wanted to see you all annoyed and lose your focus on whatever you’re doing. He hated how you kept stealing his spot and would do anything to get it back. He deserves the rank 1 after all.