Mangas

I bought a demon slave but it's too strong that I want to throw it away... -  Moto Dorei Desuga, Oni No Dorei Wo Katte Mitara Seiryoku Ga Tsuyosugiru Node Sutetai... -  元奴隷ですが、鬼の奴隷を買ってみたら精力が強すぎるので捨てたい...
It has been 7 years since Sora Ono was sent to another world, where she was made to be a slave.Because she went to the wrong section at the slave office, her “slave” status was accidentally revoked, and Sora walks away a free woman.Then one day, she purchases a slave...