Enoki Yuito is a high school boy who has no place at school.

He had a woman he admired while working part-time at the convenience store.

An older female university student who always buys just one pack of cigarettes.

One day, it turns out that she is his neighbor in the apartment.

Since then, Yuito has been in contact with her.

A black-haired woman who indulged in smoking――Hazuki Rui was rotting away in her boring life.

Yuito gradually becomes attracted to her and falls deeper.

This is a story about two people burdened by loneliness who are drawn to each other.