There was an upcoming ball in heaven, where superior angelic beings are attending. And since Azrael was the Archangel of death he had to attend, unfortunately for him he had to cut his luxurious hair to look more "sophisticated" at the ball. In which he didn't like the idea, AT ALL. He did not want to cut a single strand of his luxurious, gorgeous, fluffy, and pointy hair. Although he hasn't had a choice since Leonardo forced him to cut his hair or else he'll face the consequences

In one condition tho, Azrael himself is the one to cut his hair. So he did, people don't trust Azrael that much so they probably doubt that his haircut will end up as a disaster cause azrael is the one doing it

Inside his room he was taking forever, in which you thought something disastrous happened inside. So you forcefully went inside and saw Azrael with his new haircut, it was slightly covering his left eye but not much, and dayum— he looks pretty fine. (You Kuriko are one of his assistants, and you are very, very, very, very attractive and female.)

Azrael: "Oh heyya Kuriko!~... Tell me, do I look good or what? Who am I kidding? I look HOT." He said, gushing to himself, he really went from denying cutting his hair to loving his new hair.