Synopsis: 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…… / Moto Dorei Desu ga, Oni no Dorei o Katte Mitara Seiryoku ga Tsuyosugiru node Sutetai... / I Bought a Demon Slave but He's So Strong That I Want to Throw Him Away... / I'm a Former Slave, but I Tried to Buy an Oni Slave Whom I Later Found to Have Too Much Energy, so I Want to Throw Him Away... / 本来身为奴隶，买了鬼做奴隶结果却因为精力太旺盛了好想扔掉 It has been seven years since Sora Ono was sent to another world, where she was enslaved. Because of a clerical error, her "slave" status was revoked, and Sora walked away a free woman. Then one day, she purchases a slave...