Isamu, a sixth-grade boy, lost his mother in a car accident at a young age. Ever since, he's been unable to forgive those who ignore traffic rules. Each day, he stands at the crosswalk with a yellow flag—his mother's keepsake—guiding his classmates and watching over the signals. Though adults dismiss him and his peers call him a "traffic light fool," Isamu remains committed. When his father announces plans to remarry, Isamu refuses the idea of a new mother. But upon learning that the woman too lost loved ones in a traffic accident, he begins to open up. Through this shared grief, Isamu gradually understands the importance of empathy and realizes that rules alone can't heal a broken heart.
as Isamu Yamanaka
as Yuzo Yamanaka
as Mie Sakata
as Auntie Midori
as City Council Member
as Monk
as Yoko Mizuno
as Chairman
as Yoshio
as Akira
as Saburo
as Matsubara-sensei
