The second season of Mato Seihei no Slave.

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 Kyouka’s servant both on the battlefield and at home. 
 
(Source: HIDIVE)

Decades ago, gates to an otherworldly and dangerous dimension known as Mato—the “Demon City”—appeared across Japan. Those who partook in the “peaches” growing there gained unique abilities—but only if they’re girls. When down-in-the-dumps high school boy Yuuki Wakura finds himself caught up in a gate, he’s saved by Kyouka Uzen, the beautiful commander of the 7th squad of the Demon Defense Force, who…orders him to become her slave?!
 
(Source: Yen Press)

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