"I want to grow up quicker, so I can date Minato-san." Akira Minato inherited his grandfather's coin laundry. And so, the middle-aged former corporate drone, Akira, peacefully ran the well-loved coin laundry. One day, a high-school student, Shintarō Katsuki, enters the coin laundry. Despite the difference in age, they quickly became friends. However, Shintarō suddenly finds out that Akira is gay.

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