Daisuke Higashida is a serious first-year student at Higashizaka High School. He leads a peaceful daily life, despite being dissatisfied with his family, who never laugh and leave him feeling exhausted. However, his father's company goes bankrupt one day, leaving him unable to afford his allowance, cellphone bills, and commuter tickets. When his father orders him to take a part-time job, Daisuke decides to work at a nearby family restaurant to avoid cycling 15 kilometers to school.