Komari lives in seclusion, tormented by her inability to drink blood despite being a vampire, her inability to use magic, her inability to exercise and her inability to grow.

A 18 year old boy from Yokosuka, Japan named Ryo Hazuki, finds himself on the path of revenge after watching his father's death right in front of him by a man named Lan Di, a ruthless martial arts master with incredible skills, during Roy's quest for revenge, he tries to be the best martial artist in the world so he can defeat Lan Di, this is the anime version of the Sega Dreamcast hit from the early 90s/2000s.

A irmã mais nova de Lala, Momo Belia Deviluke, se apaixonou por Rito. Momo planeja roubar Rito de sua irmã, Lala. Ela espera que, se Rito se casar com Lala, ele possa se casar legalmente com todas as garotas que o amam.