After observing him fighting against the Demon King of his world, Lucifer Sirzechs brings a demon by the name of Kenshin to Kuoh where he soon passes out from his injuries, he is reincarnated as a Devil by Rias who reincarnated the soul he just took in. How will this new twist affect the world around him, and did his family have history in this world? He would soon find out.

There is a new student at Kuoh-academy. Someone shrouded in mystery, someone with secrets. Witness the story of the ultimate evil piece in service of Rias Gremory. slightly AU, MC changed to OC (OP as hell), Characters from other series may appear, harem later on. Rated M for basically everything, blood and (later) sex being (probably) dominant.

Issei Hyoudou is no ordinary human. He is a hybrid. Born between a dragon and a Nekomata. To add to this, he is the host of the Boosted Gear. Exposed to the supernatural world at young age, he tried to escape from it and live a normal life. However, the fate is cruel and is dragging Issei back to the world he just escaped from. Harem of course or it won't be DxD.

Killed during a half-botched mission, Daisuke finds himself an unwitting part of a very strict Devil's peerage. What's a former Exorcist to do when he's unwillingly turned against old friends and befriending old enemies? An unknown heritage awaits him as he makes his way into unknown territory, all while scratching his head, muttering, "Who did I piss off to get thrown into this?"

two new student's go to Japan where they just wanted to go to school and live their normal lives. now they are the servants of a certain red haired devil and a new life began for them.