Tsuyuha Munamori is an assassin of the Manyuu Clan, tasked with retrieving a stolen clan scroll containing breast manipulation techniques. She directly targets the protagonist, Chifusa, to accomplish this mission.

She has black hair, usually worn in a ponytail, and brown eyes. Tsuyuha often dresses in traditional Japanese attire like kimonos. She is a skilled combatant, primarily wielding a naginata in battle.

Her most notable action occurs in Episode 11, where she uses her combat abilities to reduce Chifusa's breast size during their confrontation. This act significantly alters the protagonist's physical state. Tsuyuha operates strictly to further the Manyuu Clan's goals of upholding their system of societal control.