Rias is keeping a diary on the insistence of Grayfia.

It's not often you get a second chance. Even less is that world being an anime you have watched before. That's right, I have been transmigrated into Highschool DxD. So, how does one survive in the world of Dragons, Gods and Boobs? Trough breaking the system of course! Because when life gives you a chess board you flip it over.

He was a relatively normal guy, he really was. So, why was it that after his death, unfortunate thing that it was, he woke up once more. And he did so in a similar but also very different world from his own and with a very strange Gamer System… But he had a second chance at life, so that was ok. What wasn't ok was that he had no idea what world he was in. That could be a problem.

Villains deserve no redemption, only the pain of justice. Yet, in an hour of weakness the System falters and gives a second chance. A clueless soul reincarnates into the body of the vile and wicked Diodora Astaroth, follow Diodora's journey through vengeance and redemption in a never seen before Seinen light-novel.

The day after his victory over Rias in their fated Rating Game, Riser awakens with memories of a past life and a simple little quest system. With a new perspective and a path toward a different future, how will things change going forward? Minor crossovers with various media in the forms of skills, items, and abilities. Riser-centric. Rated T for now.

the Black Dragon Emperor of Domination, Issei Hyoudou. Cloaked in shadows and wielding the Ink Demon's might, he emerges as a force to be reckoned with. With the ink-stained aura of power, Issei strides through the mystical battleground, a dark monarch rewriting the rules of engagement.

Note: I don't own Highschool DD or even Monster Hunter. This is also harem and it has mature contents such as sex scene, gore, etc. Also, I have permission from my fellow author named JamesPatrickBueza6 from his story "Four Different People, One Strange World, One Grand Adventure".

He refused to believe in reincarnation, but that was long ago, in another life, in a distinct universe. Sent in a world where the strong survive, and the weak perish, made his skin crawl. Luckily, he knows this world—he knows the board, and he knows the pieces. Time to make a move. [Self Insert]

Instead of Riser Phenex, Rias is engaged to someone else. Damian Mammon-Lucifer, heir to the Houses of Mammon and Lucifer. He is sent to Kuoh Academy to meet Rias, and a whole mess of problems follows with the likes of Fallen Angels, crazy Exorcists, and a massive terrorist group called the Khaos Brigade. Rated M for language, nudity and sex. It's DxD after all.

Betrayal... it's an action of betraying another. Damian Mammon felt that feeling in his heart the day he came home to find his girlfriend in bed with his best friend. Enraged and heartbroken, Damian left the Underworld, trying to rid himself of the heartbreak. By the time he returns, will he have changed and moved on? Rated M for nudity, sex and language.

Reborn as the younger brother of Issei, yet looking almost like him, a boy sets out to explore his new life in a world he's familiar with. Thinking it would be an easy life with his ability to predict what would happen, it isn't until reaching Kuoh that he is met with the unexpected, a variable that throws everything he knew out the window. (Isekai/OC)

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.

All I wanted was to make enough money to live comfortably and put my little brother through college, but apparently, fate didn't like my plan, and kicked me in the butt so hard that I was sent flying until I ran into a bunch of supernatural problems. And that's not counting this diabolical screen that connects me with 5 other problematic people from other worlds.

what if Issei and Rias and other girls have a fall out with each other. After Issei went missing Rias and the other girls started to realize what have they done and regretting their action but when they reunited once more Issei is not the same as he used to be, a pervert lucky go around changed to the badass Issei now . I don’t own high school DxD Ichiei Ishibumi Arthur LEIXEIN

an alternative world full of singularities where the vastness of the universe or perhaps beyond is yet to be discovered things and actions hide things to see

Waking up with a ridiculous power, Issei Hyoudou tries to wrap his head around all the new supernatural occurrences suddenly in his life. All he wants to do is perv out on some girls, but things might be spiraling out of control faster than he can handle.

issei goes out late at night but little did he know he'd change his life in the craziest way possible and at 13 no less.

The Bible God didn't plan ahead for a development such as this. The last fight between the previous hosts of both heavenly dragons had drastic effects on not only Ddraig but his current host as well. Now that he was free from his prison, nothing would ever be the same. This is just the beginning of a new story for Ddraig and Issei.

Thunder, a destructive, brilliant power. One who best represents this force of nature would be the Gods themselves. Thor, the Norse God of Thunder, prevented the fall of Asgard at the cost of his own life. Now, centuries have past and a new God of Thunder shall bring glory back to his name!

Motohama isn't an important character. He doesn't even get a last name. His character Archetype is the Perverted Best Friend. He never engaged with the plot of the world around him. He is, without any questions or doubts, A Side character. Until I took over, that is. (Tagged mature just in case of DxD)

"Haruki I don't think this is a good idea". "Shut it, Raz, the calculations should be correct and besides you said to make a non-lethal spell". "Your calculations are sound but WHY IN THE NAME OF FATHER ARE YOU CREATING A TESTICULAR TORSION SPELL?"

After being struck by lightning in a freak accident caused by a gaming god's tantrum, an ordinary guy wakes up in the presence of the deity himself. Far from panicked, our hero eats pizza, jokes around, and manages to convince the god to reincarnate him into the world of Highschool DxD. Reborn as Izashi Gremory, the brother of Rias Gremory. p.a.t.r.e.o.n: p.a.t.r.e.on/evildragon04

Basically it’s the extended version of the first half of chapter 20 of Blood Dragon Emperor turned into a mini story.

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)

In one corner of the infinitely-vast universe, there lies an unfinished story of a first-year high school student burdened with the powers of the seven of the most evil creatures of yore. Now it is rewritten anew, as the shadows of both past and future begin waiting in this thorny road of self-actualization. (adopted from dvdryms' original story canceled in 24th of January, 2024)