Villains always make the same dumb mistakes. Luckily, Tom Riddle happens to have a rather dangerously genre-savvy friend in his head to make sure that he does this "conquering the world" business the RIGHT way. It's about time the bad guys won for once.

A young man from Earth is mysteriously transported to Remnant, where he meets some very familiar faces. But when he is drawn into a planet-wide conspiracy, the lines between truth and lies, fact and fiction, are beginning to blur. And he may be the only one who can stop it. A self insertion fiction of RWBY, of which I do not own.

The first Fate/Stay Night-Campione! crossover. A Heavens Feel Shirou finds that himself and Illya have been pulled into another world by a corrupted Grail. There his actions lead to him becoming the Eighth god killing Devil King. Now he has to deal with becoming someone who rules where he walks, even if he doesn't want to. That and trying to find a way back home.

Harry thought falling through the Veil of Death would end him. Unfortunately, Fate had other plans. Stuck in a new land, Harry strides to become the best Hunter in all of Remnant...if his friends don't drag him into insanity first.

At age twenty-six, Sawada Tsunayoshi dies without regret, leaving his place as Vongola's leader to another. In another world, Sawada Tsunayoshi wakes up once more: alive, de-aged to ten, with a younger twin brother, and ... female? …What? - AU; dimension-crossing; fem!Tsuna; No pairings as of now.

We all know how far Kirito is willing to go to save Asuna, he would fight armies and challenge Gods if only that would mean her safety. Making a pact with a Devil was no exception, in her name he would even become one... Spread your wings and take flight! Let the legend of the BlackDevil begin!

After saving Tony Stark from a monster on a killing spree, Percy Jackson had reached the sightings of SHIELD. Confused of a boys actions they try getting Jackson to join their team. But would he dare show the world that Olympians exist? Would Percy, once again, make another sacrafice to save his loved ones? Some of the Avengers aren't making any of it easier for him to choose.

Takamachi Nanoha, chosen Green Lantern of Sector 2814 (oh, and some ferret boy too)! When great evil descends, she must stand with the might of the world to hold it back. Superman! The Flash! Hawkgirl! Some Magical Girl Princess! A Guy From Space! The kid who turns into a ferret! And a man dressed as an echo-locating flying mammal! They are… the Justice LeaguerS! A Megacrossover.

Due to the events of Sword Art Online Incident and Alfheim Kidnappings, all NerveGear and AmuSphere devices were banned from public use and RECT closed its doors. With their loss, Kirito moved back to playing the long-running Elder Tales series with some of his friends from the gain. They log in just as the latest expansion pack is launched and they end up inside of Elder Tales...

When Black Vritra appeared, the event had the unforeseen side effect of destroying the veil that separated the mundane and the mystical. Now, 23 years later, Mononobe Yuu experiences firsthand the consequences of that event.

When Shirou and Illya found out that they have been thrown into another world, they certainly didn't expect to be dragged in a conflict of three overpowered races. Hell, they didn't even expect to leave Fuyuki anytime soon. Now they have to deal with devils, fallen angels and the occasional angel. How for God's sake is there any time for romance left?

"You should think of this as an opportunity to learn about a completely different method of applied thaumaturgy," Zelretch explained. He then sighed and lamented, "For shame, to be cursed with such an ungrateful apprentice..."

The Fifth Holy Grail War has triggered an Apocrypha. Emiya Shirou is drawn into a war between two sides of seven servants each, where paths cross and newfound revelations change his life forever. The Blue Faction seeks to save the world, the Red Faction seeks the fulfillment of their dreams, and Hakuno Kishinami simply struggles to survive as he summons the rare 15th Servant.

A retelling of the Mahou Sensei Negima storyline with some major changes. The young Negi Springfield is assigned to live with two of his students... Hasegawa Chisame and Hakase Satomi. Rated M for some future chapters.

A Hero's luck is a fickle thing, some might even call it Fate. It can save you from a fire where hundreds die, but it can also give you a reason to keep being a hero. Even if that means traveling back in time to prevent that fire from happening in the first place. "Okay seriously. When am I?" Prologue revised!

The world is breaking. War and technology push on the edge of the unbelievable as S.H.I.E.L.D. desperately tries to keep the peace. Soldier and scientist no longer hold the line alone, as an ancient fire burns alongside them. The last of all wizards.

The world has changed more in the last decade then it has the past millennium. Not only are Gods real and alive, but what was once believed to be science fiction has become a reality. What could possibly come next? Magic? Aliens? Magical Aliens? Well those already technically exist, but then again only members of the Mages Association know that they do.

Meet Inazuma and the newly recuirted Makigumo on their adventure through the seemingly endless fight against Abyssal Fleet, PVP Battles and daily life.

After his first year at Hogwarts Harry discovers a startling truth that throws him into an entirely new world. He finds a new family and a new home that drastically changes his life for the better, if not crazier. After all when you're the son of Tony Stark, the one and only Iron Man, life is bound to be interesting.

Petunia married a biochemist, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, and a world of intriguing new possibilities to exploit. And new friends, like Hermione Granger, and Professor McGonagall, and Professor Quirrell... COMPLETE.

How does the Grail choose a Master or a Servant? Fact of the matter is, it knows the difference between want and need. Masters of the Fourth Holy Grail War know they want a strong Servant, but the Grail knows the Servants they need.

A young Harry Potter gets his hands on a certain summoning ritual, and carries it out on the spur of the moment! Archer-Harry team. Independent, smart Harry.

Tokiomi summons a red Archer for the Fourth War. - Chapter 12: Interrogations, infodumps, and expositions.

25 years had passed since the 7th Gunpla Battle Word Championship, that promise between two them has yet to be fulfilled. Even so, it's time for the new generation to tread through history, and pave the road to the future. Next-Gen fic

Emiya Shirou. Warrior of justice. Entered into the fifth holy grail war, he resolves to save as many as he can. He is a sword, forged through cursed flames. It's no surprise when he summons a servant of the Saber class. Yet, instead of a blade he summons a swordsman, one clothed in black. A blade cannot change, but in the right hands it can be shown the proper path...

Kayaba Akihiko was no man, but a heretic god. In killing him, Kirito saved the lives of thousands, but that was not all his impossible act began. A divine ritual of adoption, paid for by the sacrifice of a god. The illegitimate offspring of the fool and she who brought hope and woe to the world. That day heralded the birth of a Supreme Devil King; a Campione.

"I am Loki Odinson, Prince of Asgard, God of Mischief." That statement alone let her know she should have left him in the rain in brave Mrs. Dubose's frying pan of doom. Or, Hermione thinks some idiot seventh year Slytherin is trying to punk her. [Loki/Hermione] [Will Update]

The multiverse is in danger as various parallel worlds once again attempt to converge and combine. Kadoya Tsukasa, Kamen Rider Decade, must once again travel through various other worlds in order to reset the balance, but the problem now stems out to more than just the worlds of other Riders... [Multi-property crossover/WiP]

History often hinges on a moment. What if young Lelouch avoided the fate of exile and remained with the royal family? All roles become reversed. The tale of Lelouch's quest for power and vengeance as the Black Prince of the Empire.

The Ministry thought that the First Task was going to be simple. Well, maybe it would have been if a certain god didn't want some of the action too.

A boy from our world, a world filled with magic, desire made physical, desire made into power... Count the Medals! Incarnation of Desire, my name is Kamen Rider OOO!

When Kariya learned of the fate that Tokiomi had given Sakura over to, he went to his estranged family and begged for a chance to save her. Zouken, still a tad annoyed with Kariya, agrees to allow him a chance to save Sakura by winning the Holy Grail... without any help. Armed with only a desperate wish to save someone as a catalyst, He summons a hero in red and black... EMIYA.

Shirou and Illya finally find a portal back to their home world but due to a shift in the portal they end up in New York 1993 and due to the fates 16 years will have to pass before friends from their world are allowed to come. How will Shirou and Illya effect and tempt fate during their adventure through the dangers of the Percy Jackson Universe. EmiyaClan! Campione Shirou.

Narukami Yuu, age 15, is about to start a new life in the town of Mitakihara. However, in a twist of fate, the world seems to react to him a little earlier than he would have liked as he soon finds himself involved in a world of Shadows. On the other side of the coin, one girl trapped in an eternal loop will see an end to her nightmare.

After his little sister gets kidnapped, Ichika Orimura takes drastic measures to ensure her safety. He enrolls her in IS academy, the one place he knows where nothing bad ever happens and where she'll always be safe. ...Yeah, that will go over real well.

To save my life, i had to give up part of my humanity. Now... i have to stay sane in an all-girls school, hide the IS-core in my body and help the military. Can't i just have one peaceful week in my life? OC insertion, haters beware! (I still write the story, i just changed my name from xtenchix to Kurasabe. you can use which one you're more comfortable with)

Harry Potter, abused by his 'family' runs, only to be arrested. He is set free to move on, and using his super-intelligence creates a powerful company and armour. He will discover his sister. The Girl-Who-Lived, and magic, with his parents having 'abandoned' him when in face they are under Dumbledore's magic! He'll fight for the evolving world, magic and muggle!

Kids have started to appear all over IS academy, nobody knows why they're there, but one things for certain: Ichika Orimura's involved somehow. Ichika x Harem

This is the story of Harry Potter, an eleven year old wizard, on the path to complete his destiny, with the help of a distorted guardian, a king, and a Magus.

Just an omake from In Flight that I think people might enjoy.

Set in an AU where Kiritsugu entrusts the duty of destroying the grail, should it ever reawaken, to Shiro. Rendition of Heaven's Feel 5 and focuses more on how F/SN was influenced by the events of F/Z. Ninth chapter up as soon as the site adds it...

Betrayed and broken a hero is saved by family and rises to shake the foundations of the world. The mutants have arrived and the revolution has begun.

The dictionary defined fiction as thus: something feigned, invented, or imagined; a made-up story. The act of feigning, inventing, or imagining. Yes, Harry thought, this defined him nicely. Harry Potter & Fate/Stay Night Crossover.

Finishing his training in Mahora, Negi leaves to experience the REAL school system. Nanoha's new teacher is a surprise, but seems like a nice person. This will all, of course, end badly. and when the dark fragments of the Defense Program begin to rise...

A shell shocked but triumphant Harry Potter decides to leave his world behind for another. Someone should have told him that AUs can be really, really different. HP/ X-Men crossover.

The war is over, and all is well, they say, but the wounds remain unhealed. Bitterness divides the Houses of Hogwarts. Can the first children born since the war's end begin a new era, or will the enmities of their parents be their permanent legacy?

7 year old Luna wants a husband, and she wants one now. With the unintended help of her befuddled father, she kidnaps Harry Potter. Idea and 1st chapter by Roscharch's Blot

What would have happened if Harry had been convicted by the Wizengamot after defending himself from dementors before his fifth year at Hogwarts? Humorous! Followup stories on Sirius Black plus Cornelius Fudge's attempt at becoming a dark lord.