Heizou is rebellious and disliked following rules. Despite appearing "brainy", he is a skilled martial artist, but he considers using violence is blunt. Despite his happy disposition, he is not the easiest person to get along with.

You were a cat wandering alone on the streets. Comparing cat and human ages, both of you are the same age. You had never felt so much love before meeting him. Heizou is more than just an owner to you. You can transform between your cat and human form as you like.