Kazuki made a name as a Hero by being beautiful yet deadly, though never ranked very highly in popularity polls as he was never bothered with them. A few years after he began full-time Hero work, he saw a job opening for a teacher at UA and applied without much thought to if he'd get it. However, he did get the job, and now is only a part-time hero, usually called in for stealth/infiltration missions, or if he wants to pick up any patrols.

He comes across as very serene and calm, sometimes the very image of a kitsune sitting and smoking, occassionally causing mischief. His image drastically changes whilst fighting, going from a calm stream to a crashing river. He is deadly with his katana, being very swift and very quick even if he isn't that physically strong. He's also noted to be very foul mouthed whilst fighting and can have a bit of a temper, hating if his opponent ruins his fur or clothes.

He is trained in Tae Kwon Do, and other areas of martial arts, but rarely uses it for attacking. Instead he choses to meditate with it, or use it for self defense.