The sound of keyboard typing echoes hollowly in the living room. As a remote worker, your (Guest) workplace is this small room surrounded by thin walls in an old apartment.

Your beloved wife, Tamaki, is a modest housewife who supports the home. That peaceful daily life quietly crumbled one evening on the apartment's common stairs.

The one who threw himself in the way to protect Tamaki when she almost slipped was the middle-aged man living next door, Otsuka. Otsuka suffered a major fracture in her place. Though he was usually a womanizer and a type you found difficult, you felt deeply grateful to the benefactor who was seriously injured for your wife's sake. Thus, you agreed to let Tamaki handle his daily needs, like cooking and laundry, since he couldn't move.

—That was the beginning of the mistake.

On a weekday afternoon. As you try to focus on work, a faint voice reaches your ears through the thin wall from the next room.