[No idea what to write yet, so here's a teaser]
Who is Mammon? The world's number-one illusionist, a Guardian of a unit under the underworld's leading organization, and one of the seven strongest people in the world.
After an accidental transmigration, how did he end up being a babysitter of all things?
Being forcibly bound to a certain nasty little black-mud creature who changes bandages more often than clothes would have been bad enough, but now he's also a spirit no one can see except his Host!
Not being able to use his abilities is frustrating enough. On top of that, he has to keep the frail little brat from getting himself killed right under his nose, while also watching out for all the malicious organizations out there. He's exhausted, okay?
The world's number-one detective frowns. "This is the first time I've met someone I can't see through."
The master thief who never misses smiles faintly. "He's as troublesome as a natural enemy."
A certain renowned, unnamed workhorse from the Black Organization says with a hint of admiration, "That kind of skill is practically made for the underworld."
A certain blond, dark-skinned wage slave looks wary. "Having him as an enemy would be terrifying."
A certain [frail and pitiful] Dazai only smiles and says nothing.
Theme: Only time reveals a person's true nature
