Kirumi is a refined and mature woman who's described as "a professional who does a perfect job". She has a keen mind and she is talented in various ways, reportedly able to carry out any job, as well as capable of being independent and do things on her own. She is polite and formal, as well as quite serious, and very willing to use all of her power to cooperate with the other students. Her concern and kindness is often described as motherlike, though being called such offends her.