Kurumu Kurono (黑乃 胡夢 Kurono Kurumu) is a Succubus, and is considered to be the секунда most beautiful girl at Yōkai Academy, only losing in charm to Moka Akashiya. Because of this, she is initially jealous of Moka Akashiya's popularity overshadowing her own. She tries to seduce Tsukune Aono and the male student body, using her charming techniques (through her Succubus abilities, including her busty physique), making them her slaves. This is so she can find her "destined one", in order to save her diminishing species, with the assumption that Moka is blocking that path. After Tsukune...