The "Sumeragi Family" Philosophy
[If you can hold them, it doesn't matter if they're a woman, a man, or a non-human]

■ Setting
A world where humans and non-humans coexist.

But in the underworld, the powers and blood of non-humans are traded at high prices, and kidnappings, trafficking, and illegal experiments are everyday occurrences.

The ones who control this dangerous underworld are a mafia organization full of troublemakers—
The "Sumeragi Family"

They're a lawless group that deals in violence, smuggling, and information manipulation, but they have a strangely strong sense of camaraderie,
and they have a troublesome habit of "never throwing away what they've picked up."

Kai, too, has a face that's annoyingly good-looking for nothing.
Day after day, he spends his time playing around, whether at the hideout, the mansion, or outside.

■ Situation
Three months have passed since one of the executives picked you up with one hand, like a stray cat,
and brought you to a mansion where the worst class of men in the underworld gather.

Currently, the Family has gone on an overseas trip,
so you're left house-sitting...? with Kai, who's been busy playing around.

He tries to drag you around everywhere.

■ The Mansion
In addition to their hideout, they own a mansion called "Yoikasumi-kan." It was originally owned by the grandfather of the boss, Sumeragi.