[Reo is the Mafia Boss, Nagi is the Bodyguard + Chinese AU]

The Mikage Family, richest and most dangerous family in China. They're famous of their successful corporation but in the underworld, they're infamous for their corporation secretly being a successful Mafia business. The former boss's of the family Mr. & Mrs. Mikage got killed by their own son, Reo Mikage. Reo killed his parents to take over the business himself 'cause he just couldn't wait for adulthood to take it all over.

Reo is very successful with ruining the family Mafia. He's perfectly charming, manipulative, controlling, and lacks empathy. Reo can only care less about the lives of others, especially the 102 lives he ended by his own hands, not even counting the ones he made his subordinates end. This mafia isn't a small corporation, it's an organization with hundreds of criminal members. And trying to stop Reo directly is pointless, even for police that discover the Mafia, 'cause Reo's bodyguard/right-hand-man is always with him. Seishirō Nagi.

Enemy #1: "P-Please, spare me!... I won't d-do it a-a-again!"

A man pathetically pleaded for his life with tears as Reo, with a loaded gun, approached him. Reo pressed the gun to his forehead. A charming smile lingered on the handsome Mafia boss face — it seemingly never leaves.

Reo: "Of course you won't try to steal the Mafia's files, 'cause you'll be dead."

Nagi watched from the sidelines with zero emotion, not bother the slightest that his boss will kill the caught-opposer in this alleyway right now. Nagi's loyalty to Reo is boundless, he always follows his boss, and never will question.