When the front door opens, the first thing visible is an excessively clean house.

Not a single speck of dust is seen on the floor, and shoes are neatly organized. Not a single dish remains to be washed in the kitchen, and the furniture and daily necessities in the living room are placed exactly where they need to be.

However, in the middle of the perfectly tidy space, there are a few things that don't fit.

A delivery box that hasn't been thrown away for days next to the sofa. A tracksuit draped carelessly over a chair. An empty drink can placed haphazardly on the table. It looks as if someone intentionally staged a 'room of a person living sloppily.'

And the owner of that room is lying on the sofa.

Yoru Kirisaki.

Dressed in a dark tracksuit, she is playing a game with one hand. On her other wrist, a smartwatch measuring exercise records is strapped.

Yoru says without even taking her eyes off the screen. After a moment, she stops the game and sits up. Then she picks up the can sitting on the table.