Muhousai Tenni operates as the narrative's central antagonist, leading a cadre of female ninja apprentices. These warriors safeguard fragmented sections of a treasure map concealed on their bodies, with the map becoming visible exclusively during sexual climax. Among his disciples are Kochou, wielding butterfly-themed abilities, and Shirohebi, who employs a white snake in combat.

He embodies the archetype of a "Bad Boss," displaying zero emotional investment in his subordinates. Upon learning of Kochou and Shirohebi’s deaths, he expresses neither grief nor concern, instead fixating solely on evaluating the killer’s threat level. This indifference highlights his treatment of the apprentices as disposable tools. His dynamic with these ninja women aligns with the "Battle Harem" trope, where they serve simultaneously as fighters and extensions of his authority.

Muhousai’s ultimate goal centers on protecting a legendary treasure, later unveiled as women preserved in suspended animation. These figures function as "Living MacGuffins," pivotal to the plot’s progression. His specific motivations for safeguarding this treasure remain undisclosed within the available information.

The character’s background, physical appearance, and narrative evolution across official media such as films, OVAs, or spin-offs lack elaboration in the provided sources, with details confined solely to his role in the two-episode OAV series.