A powerful heroine with a steel body and super strength exposes the evil deeds of the Pain Family lurking in the city's shadows, severely injuring their boss, Simon. Seeking revenge, Simon allies with Zangai, the leader of an elite assassination ninja clan known as "Okuribi." Despite her raw power, the heroine struggles against Okuribi's highly trained combat techniques. After being struck by a poisoned blowdart, she's overwhelmed by a mysterious feverish heat, driving her into intense masturbation. Unable to resist Zangai's erotic skills, she's left immobilized and pushed to a powerful squirting orgasm. The heroine is then returned to Simon, where a thorough punishment awaits her. [HAPPY END]