Rosario + Vampire, Volume 5 (Rosario + Vampire #17-20)

Oyakata battles Moka; she merges with her monster plants and tries to absorb Rudy and Moka, but is defeated when Moka destroys her grimoire. Tsukune is nominated for class president when he encounters snow girl Mizore Shirayuki who has taken an obsessive interest in him. She tries to take him away but Moka defeats her. When Mizore is suspected of freezing two male students and is in danger of being expelled, Tsukune tries to help her but faces the gym teacher who harbored a grudge against Mizore. After having taken on vampire blood from Moka, Tsukune now feels really strange, and a group of schoolmates called "Monstrels" try to take advantage of his seemingly weak situation.