The original Leviathan died. However, in death, things are not necessarily over. The spirit of the original Leviathan finds its way to the body of Issei Hyoudou and from there, Issei Leviathan was born. Not content to wallow in old grudges, Issei Leviathan sets out to fulfil his original goal before his passing. To prove his dominance, as the one true serpent with no equal.

Small changes can have big impacts. Natsu never spent a lot of time with some of his fellow guild-mates, however, a chance interaction with one, causes Natsu to unearth a secret. Cana had a secret, Natsu stumbled upon it and in doing so, decided that he would do his best to help Cana confront her fears and tell her father just who she is, while both grow stronger along the way.

Ultear struggled to redeem herself. Her first attempt at life failed her and even her second try in Crime Sorcière wasn't enough, her life was still cursed. However, with Natsu intervening during her casting of Last Ages, Ultear was given a third chance to make things right, with Natsu tagging along and revealing that he isn't just the lovable idiot everyone thought he was.

What if during his childhood Natsu was sent to a village to learn how to be more human and during his visit he made friends with two white-haired girls? What if he was possessed by a demon while saving them from Zeref's cultists? How will these small changes affect the Pink Haired mage and Fairy Tail in general? NatsuxHarem stronger Natsu. (Current Arc: Tower of Heaven)

It was Natsu who fought Juvia, not Gray this time. However, Juvia is not all she seems to be, the Rain Woman unknowingly has a secret, although what is it and just how does it relate to Natsu, who after his fight is suddenly feeling very odd, seeing flashbacks of events he can't seem to recall. In time, Natsu will come to learn that Juvia is much closer to him than he ever thought.

Issei didn't know what he was getting into when he made a deal with The Red Dragon Emperor, all he knew, was his friend was in danger and he needed to save her, no matter the cost. Eventually, Issei finds himself mixed up in the world of Angels, Devils and Fallen Angels, however, at least he has a way to fight for those he cares about. Less perverted, powerful, Dragon Issei. Harem.

A young Vali really had no idea why he should trust the red haired devil who shared his last name, but for some reason, he felt that he should. Little did he know, he was changing the fate of the DxD universe entirely.

Just one mission, that's all it took to change the life of Natsu Dragneel in ways that he never would have guessed possible. Will the rowdiest and most childlike member of Fairy Tail be able to keep his promise to a dying mother. Better yet will Fairy Tail even give him the chance at keeping his promise? Disclaimer I do not own Fairy Tail.