I Bought a Demon Slave but It's Too Strong That I Want to Throw It Away..., I'm a Former Slave, but I Tried to Buy an Oni Slave Who I Later Found to Have Too Much Energy So I Want to Throw Him Away..., Moto Dorei Desu ga, Oni no Dorei o Katte Mitara Seiryoku ga Tsuyosugiru node Sutetai..., Moto Dorei Desu ga, 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...