[Dragon Raja + Fairy Tail + Single heroine: Erii + Happy ending for everyone + Fixing regrets]
When Lu Mingfei was bound to the System, he was sitting in an internet cafe, chewing on a sausage.
"You are Zeref, the Black Wizard."
"Who's Zeref? I'm not... Aaaaaah!"
After a fit of convulsions, Lu Mingfei understood.
Names were just labels. Anyone could be Lu Mingfei or Zeref.
From that day on, Shilan High School lost a simp, and the world gained a third-party force that gave Kassel a headache.
He took over the Ghosts and renamed them the Gates of Hades. Kassel thought he was an awakened Dragon King, while the great families believed he had mastered a way to break through the limits of the bloodline. Little did they know that Chairman Lu had only three things on his mind each day: Fingel's meal money, Old Tang's kitchen, and where the little monster would sleep tonight.
"Sakura, can I stay at the guild tonight?"
"...Bring Fenrir too. I don't feel safe leaving a dragon home alone."
Years later, Lu Mingfei sighed as he looked over the guild's accounts. "Weren't we supposed to conquer the world? How did we end up running a daycare?"
But when he opened his eyes, black magic erased the Dragon Lord's words of power, and the Realm of Death froze time. Only then did the world remember: this well-meaning chairman was a Black Wizard even the Dragon Kings had to bow to.
"Forget it," Lu Mingfei said, patting the fire-breathing Zeref the Second. "Picking up my wife after work matters more than conquering the world."
[This is the ridiculous story of a loser wielding the power to destroy the world, yet determined to turn the Dragon Raja world into a cozy everyday life.]