After defeating the three Factions once more. Natsu and the rest of his friends have gone into hiding. After hearing it out of his own mouth Rias does as she was told. Having taking over the underworld becoming a great Satan, she did just that. But a new enemy awakens causing Natsu and the other dragon slayers to take notice. Old enemies emerge from hiding taking advantage of the weaken forces of the factions, and the biggest threat to Natsu still lingers in the air. The Holy Pentadrakes. Will he be able to protect everyone he holds dear? Or will he once again fall into darkness.

Natsu is raised by Fire Dragon Igneel, and Blood Dragon Sanguinia. He has some knowledge of other forms, but his affinity is to blood and fire. He is super powerful, but reacts quite violently to people if they annoy him. Will Celestial Wizard Lucy Heartfilia be able to make him change, or will he remain as frightening and violent as he is?

To the heavenly skies down to the bottom of the sea, far into the driest of deserts and into the frozen tundras in the mountain. It's power and might is absolute as it stands in Iron Clad. Many contenders, from the greatest of warriors to the mightiest of beasts have challenged it but none had ever succeeded. No one could stand before it, a beast which had many names to be called, but as the years go by into history, it has always been known as the Sole-Supreme Danger Beast: END. And that is for what it brought, to all its enemies. ~~~~~~~~~~~~~~~~~~~~~~~~~~ All credits goes to Wacko12 on fanfiction, since I adopted this story from there! Go and read the original story on his page! P.S. This description is my version too!

Fairy Tail and Highschool DxD crossover. Natsu Dragneel a 19 year old high school student trying to live his everyday life as a regular human along with his little sister. Except he is everything but human. Natsu is a dragon slayer with the ability to slay dragons and have them at his mercy. But he also hides another terrifying power that he tries to keep hidden from his friends and the woman he loves. Only a few know about his true identity only a few know what he actually did. Will he be able to keep his dark part a secret? Or will all his past demons come back to haunt him?