Akira Minato inherited the old, air-conditioned 'Minato Corporation Coin Laundry' from his grandfather.
Akira, who quit his job at a corrupt company just before he turned thirty, runs a store leisurely.
Then one day, high school student Katsuki Shintaro comes as a guest.
The two become friends despite their age difference, but Akira ends up being found out by Shintaro that he is gay...?

Cumulative sales in Japan exceeded 1 million copies by 2023.
A live-action drama adaptation will be released in 2022, with season 2 airing in 2023.