Shizuku used to be a demon, but now he works for humans as a bodyguard.
The Dark Knight stationed in Gotham came to see him and asked, "Why are you doing this?"
Shizuku replied, "I'm atoning for my sins."
"No, I mean, why did you shove your employer's head into a toilet?"
Sitting on his employer's back, Shizuku thought for a moment, then wiped the blood from his hands and smiled. "Because I'm a demon."
*
Shizuku is a legend in the bodyguard business. In a world overrun by aliens, gods and demigods, and people with superpowers, the self-proclaimed elites of high society need a reliable bodyguard to keep them safe.
And Shizuku is the best choice.
He has extraordinary abilities and experience, is skilled in all kinds of combat techniques and weapons, and is absolutely loyal and dependable. Most importantly, he's cheap and handsome enough to be irresistible.
That means plenty of clients hire him for his looks. They fear his strength, desire his body, and look down on his low rates, yet they can never resist his charms.
"For just five dollars a day, I'll provide any service you want," Shizuku said with a smile. "I can be your bodyguard, driver, cook, or even your lover. I won't charge you extra. All that matters is that you're satisfied."
That was why the demon shoved his employer's head into a toilet for the eighth time.
It was also why he got caught in the act by Gotham's Dark Knight for the eighth time.
And after that came the ninth time, the tenth...
The twentieth time.
But after that, the Dark Knight disappeared.
In his place appeared Mr. Wayne, Gotham's billionaire playboy philanthropist, cane and all. He hired Shizuku long-term for a hefty sum, with a dazzling smile and an air of pure sex appeal, and took his bodyguard everywhere.
Shizuku knew this playboy's reputation and thought he could probably get the man's head into a toilet within three days.
But...
Three days, a week, a month.
Three days, then another three days.
The demon had earned nearly a year's worth of five-dollar days from Wayne, but still hadn't managed to get even the tiniest bit of soul energy in breach of their contract.
What happened to the playboy everyone talked about?
He was going to starve to death.
*
[■■■ Observation Log
Subject: Shizuku, a non-native demon with the appearance of an adult human male from Earth.
First observation date: ***
Second observation date: ***
Third...
The subject prefers working as a bodyguard, adapts well to human society, and enjoys sweets and fish.
(Note: The subject seems unable to obtain energy by eating human food.)
Observation No. xxx:
The subject feeds by signing contracts to obtain human soul energy. Five dollars is the minimum rate for a day's companionship; all other services require soul energy as payment!
Note: Skilled at verbal persuasion. A very, very cunning demon.]
*
Shizuku: "Mr. Wayne, you're really not good at keeping a demon. Please let me out."
Mr. Wayne blinked his charming blue eyes.
Shizuku: "...All right, you win. Let's amend the contract. Now you're truly my master, sir."
1. Bottom, pairing with Wayne.
Theme: Work hard.