Watch Chained Soldier

Yuuki Wakura watches as dueling supernatural forces ravage the Earth. Mato are portals to another dimension, avenues from which dangerous monsters escape. Peaches are resources given to women granting them abilities. Chief of the Seventh Unity of the Anti-Demon Corp, Kyouka Uzen arrives to save Yuuki from a monster. Surprisingly, Yuuki holds the power to increase the Peaches effectiveness. But to save the world, Yuuki must be willing to become Kyoka's servant both on the battlefield and at home.