Chained Soldier: Season 1

In a world where only women can gain superpowers, Yuuki Wakura seemed doomed to a boring future working in secondary and caretaker positions. Then fate literally changes his world, pulling him into the monster-filled Mato dimension, where he's rescued by the dominating Kyouka Uzen, whose ability temporarily gives Yuuki incredible power... at the cost of transforming him into her inhuman slave! Stunned at Yuuki's strength when transformed, Kyouka decides to bind Yuuki to herself permanently... which he's all too willing to do. Until it turns out that she also expects him to serve her all-female combat unit as maid and servant, even when he's not fighting as her personal CHAINED SOLDIER!