La perversión de Issei llega a tan altos niveles que termina evolucionando en una desconocida habilidad de límites inconmensurables ¿Qué hará él con esto a partir de ahora? ¿Consumará sus propios deseos, ayudará al mundo… o lo sumirá en el caos eterno? [AVISO: Lenguaje obsceno; Contenido sexual explícito; Incesto]

Accidentally trapped in a universe other than his own, Hideki (reader) tries to adapt to a life filled with magical creatures and beings of overwhelming power, all while remaining a mere human. Despite his lack of supernatural abilities, his courage, physical strength, and determination make him an unexpected figure within Kuoh Academy.

Raizel Phenex, héroe de la guerra civil, es ahora sospechoso de un golpe de estado. Los actuales Maous lo salvan y lo nombran Administrador de Kuoh para demostrar su inocencia y apoyar a las herederas Gremory y Sitri. Aunque desconfía de las intenciones ocultas, algo en la joven Hyoudou Atsuko lo lleva a aceptar la oferta.

"Okay guys. Time to settle an argument. If you were to reincarnate in DxD, what race would you choose and why?" Some choose dragons. Some choose yokai. Others choose devils and another few, angels. In an era where gods exist and a myriad of races populate the planet, Igor made the most uncanny of choices. As for what it was, read on and find out. Available on RoyalRoad and Webnovel

SI-Issei/Harem, No Summary, Rated M for Mature

Koneko-chan is in her mating season and everyone's worried. As if to make matters worse, Azazel made the wise decision to allow terrorists into Issei's home... which was remodeled without his consent anyway. Throughout the hectic day, he comes to find Koneko with her big shitty sister, Kuroka. Who can save him from the reproductive needs of a member of a dying breed of nekomata?

The gears of Space and Time march on relentlessly. No matter what changes, stories always begin like this. The hero encounters danger and encounters a faint glimmer of light in the dark. From the light is born hope and though weak, births endless possibilities. Yet, as stories grow like life, it all ends the same way as if by fate. Yet, on this dark night, a star shines brightly.

When Issei was 8, a tragedy struck and a fire was planted at his house, killing his parents. Issei survived thanks to the strange intervention of an even stranger power which put the soul of King Solomon within him, the Wise King telling him what to do to survive until help arrived. Now, years later, Issei has returned with the power of the Void System.

Issei fills out a mindless coombrain fantasy CYOA, gets the powers, and the Editor is dead so he can just get his dick wet. He gets his dick wet. Also, there's demons and angels and such, but he doesn't know that, so he mostly focuses on getting his dick wet at first.

After numerous sightings of missing people in Kuou, I find myself tasked with investigating and uncovering the truth about these events. Now, Reinhardt, Ana, and I are part of the city's academy as we search for answers to this mystery. Only perhaps making a deal with demons doesn't sound so bad. Harem

Death is only the beginning. Rise again, and through the power of the Gacha (Random Bullshit Go), survive the nonsense of devils, dragons and thirsty schoolgirls and their equally hungry mothers.

On one hand, being reincarnated with an admittedly lackluster System is a dream come true. On the other hand, being thrown into the middle of a Civil War isn't exactly the best start to an Isekai adventure. (GamerSI-OC) (GamerxHarem)

"One day, I opened my eyes, and found myself vomiting off the top of the mountain. Definitely not the best way to start my day, or evening at that point. Then I got attacked by a mutated snake, taken in by a perverted virgin kitty, and went back home to get blown up by a dragon. Twice. And that's only the start. At least it's exciting? This new life of mine." (Demigod SI-OC)

Assassin's creed X High school DxD X Fate/series. Esta no es la guerra del santo grial como se conoce en Fuyuki. Esta no es el destino de la orden de los asesinos que conoces de los tiempos modernos. Estos no son los estudiantes de la academia Kouh que conoces. Una nueva guerra del santo grial ha empezado y más que solo ganar el santo grial esta en juego. El destino de la humanidad

A mage in the DxD universe makes the mistake of trying to summon a succubus and instead gets a devil wife. Task failed successfully?

Being the son of Tiamat came with a lot of expectations that Emrys was confident in living up to the hype. Now all he has to do is find his dad to collect some child support. OC/Lemons

Issei fights against Trihexa, but all of sudden he remembers Draig's words from the legendary character from DBZ to finish off Trihexa for once and for all. Find out more about this one shot

Follow our protagonist Jin as he's reincarnated into the world of Highschool DxD. But this world is a lot different from the one he saw and read! He's also lost part of his memory that has information about his past self. Follow him and his MASSIVE harem as he finds his way in this new world.

Rias Gremory has always had a massive crush on Issei, but Issei is having a relationship with others where Rias who happened to be familiar with. Find out Issei's fantasy story

Issei faces the problem with gremory girls, especially with Rias and went to hook up with Raynare

The Berserker, a feared power that is exclusive to a single bloodline in all the supernatural. He hasn't been seen since the clash between the Heavinly Dragons. This is the tale of the next wielder, Leo Young ... This is his story... (I have fixed the mistakes that I had left in the first 3 chapters, everything should be good now. Let me know what you think, or if you enjoy it)

Meet Issei, a.k.a Degenerate Gamer and Oppai Addict. Spending his adolescence to his heart's desire, this young boy marches onward without a speck of care. As long as he has his buddy Matsuda by with him, everything will turn out to be just fine. Even if they somehow can't get into college, Tobio-san would always cover them, right? Human Issei/Dual Pairing/ Diff SG/ AU/ Fem!Vali

A man finds himself within a world familiar, yet alien. Bereft of the usual boons, the revelation that he is on his own and starting from the bottom is harsh. What he DOES receive, however, is perhaps the greatest tool available to any engineer: the ability to automate. One may be weak, but the strength of the many cannot be denied. (Golem Crafter MC) (Factorio Xover?)

Instead of a fallen angel, Issei is approached by a very different girl. One who takes great offence to attempts on Issei's life. The Supernatural realms of Earth are about to find out how small they really are, now that Azathoth has found her beloved. Issei steadily ascending into Eldritch-Godhood, a harem including female Eldritch, and various Cthulhu/Lovecraft elements.

Issei Hyoudou is an ordinary boy or that was the case until the day his whole world got flipped upside down the day he got the system