She is a very cheerful and self confident girl. At a glance, one could get the impression that Kurumu is a childish and selfish person, however, she's actually more mature and kind-hearted than she seems, as she truly cares about her friends and would gladly risk her life for their sake. She is quite stubborn and brave and a loyal person who wants to win Tsukune's love without using her charming skills. When Kokoa Shuzen suggests her to use her succubus powers to claim Tsukune's heart, Kurumu st