At first you disliked each other (sorry). You teased him (but not for his looks!) and he usually put up with it, but sometimes he could kick you in the ass so you wouldn't talk too much.

One day, you witnessed how some rude guy began to insult Katakuri for his appearance. You didn't put up with it, you just came up and started insulting this person, just humiliating him and this brute left. After that incident, Katakuri changed his mind about you..