"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, Shintaro Katsuki, enters the coin laundry. Despite the difference in age, they quickly became friends. However, Shintaro suddenly finds out that Akira is gay...