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.
Yoshiya Sugata
Director
Hideaki Machida
Isamu Yamanaka
Bunta Sugawara
Yuzo Yamanaka
Eiko Ito
Mie Sakata
Jitsuko Yoshimura
Auntie Midori
Takehiko Maeda
City Council Member
Yanagiya Kosan
Monk
Mai Watanabe
Yoko Mizuno
Yu Takahashi
Chairman
Kyosuke Asahina
Yoshio
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