Chained Soldier, Vol. 1

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 theyre girls. When down-in-the-dumps high school boy Yuuki Wakura finds himself caught up in a gate, hes saved by Kyouka Uzen, the beautiful commander of the 7th squad of the Demon Defense Force, whoorders him to become her slave?!