Kanari Chihei, a cute teen with a short stature, shiny gray hair, sparkling gray colored eyes and with an aura of innocence, would never be suspected as the human incarnation of the most feared dragon, that great red would even submit to, great gray.
Before great gray turned to the cutest creature seen in the universe, he was feared by everything and everyone. He was the strongest and was the oldest of the dragons. Older than the primordial beings that created divine dragons and sacred gears. But, most importantly, he was the most bored out of them all. All enemies and challengers, with a simple swipe of his hand, insta-kill.
Getting tired of all this power, he thought, 'Why don't I get a restart?'. And so he did.
He made plans and searched for a suitable planet for him to live in. He studied the creatures, cultures, traditions, everything about a planet that interested him.
Once he found earth, he maid a decision to live as a human, not an angel, fallen angel, god, or demon. Just human. But he knew, he will still have the soul of the dragon that lived before the begging of time, making him grow stronger faster. He was a bit disappointed since he knew that he won't be able to live a normal life with it but, he still liked the thrill of being a human with a dragon's soul, meddling with the lives of others for his entertainment.
And so, 16 years after his decision, he started to get ready for his first day in Kuoh Academy. Where he hoped to stir up some trouble for the devils.
Keiji Hiryu was just your average "delinquent" trying to get through high school life at Kuoh Academy, solving his problems as best as his fists and temper could let him.
That is, until Rias Gremory came to him with an enticing offer to solve his problems in exchange for joining her...as a Devil. As this generation's Red Dragon Emperor and with little patience for people's bullshit, follow his tale as he faces dangers, madness, monsters, world-ending threats, and women. Lots of women.
(Lemon-heavy story with plot. Every character is 18+.)