Mato Seihei no Slave 3 is the third TV season of the Chained Soldier franchise, an action fantasy with drama, romance and ecchi elements. The franchise is set in a world where Mato, gateways to another dimension, release dangerous monsters, and Peaches grant women special powers. In the first season, Yuuki Wakura is rescued by Kyouka Uzen, chief of the Seventh Unit of the Anti-Demon Corps, and discovers he can boost the effect of Peaches, at the cost of serving her in combat and at home.