The Sai containing the powerful "Seven Stars” sealing technique became tainted after the rabbit-masked intruder's attack. Sonto orders Ichiyo to travel to meet Otohime - master of the Sai Chamber and the creator of Sai to purify them. She traps them - but a mysterious girl offers them her help. Meanwhile, the Eight Immortals conclude the attack was the work of one of the Four Perils, Konton...