The slavery premise isn't window dressing here, it's the entire engine, and the show commits to that friction in a way most ecchi won't. Yuuki's power forces him into a genuinely uncomfortable dynamic that the story actually uses for something other than titillation once it finds its rhythm around episode 5. The action animation is sharp enough to matter, the female cast has actual weight beyond their designs, and by the end you're invested in why these two people need each other despite how it started.
Yuuki discovers he possesses a rare ability: his presence amplifies the supernatural powers of women who've been gifted with Peaches, mystical fruits that grant combat abilities. When Kyouka, a hardened commander from the Anti-Demon Corp, saves him from a monster attack, she makes him an offer he can't refuse. To help humanity fight back against the creatures pouring through Mato portals, Yuuki must become her devoted servant, both on missions and in everyday life. What begins as a desperate partnership becomes something far more complicated. Yuuki trains alongside Kyouka's squad, discovering his unique gift can turn the tide in impossible battles. But his new position comes with uncomfortable intimacy and power dynamics that constantly test him. The war against dimensional invaders escalates while Yuuki grapples with his unorthodox role and growing feelings for Kyouka. Action sequences pulse with urgency, punctuated by romantic tension and moments of genuine character growth. This is equal parts supernatural combat thriller and relationship drama, where every victory feels earned and every personal moment carries weight.