A troubled high school student, Tatsumaru, visits the Senda Shokudo with his friends, which is rumored to be able to pay bills.
They fill their stomachs without hesitation in front of the kind-hearted shopkeeper, and since then they have come to visit many times as a "hangout where you can eat free food".
One day after a while, Ryumaru, who got a lot of money, visited Senda Shokudo alone, but for some reason the door was closed, and the next day the store was silent without a single sound.

A coming-of-age story depicting the anguish and conflict of young people, starting with one regret.