綾瀨 遙╳ 妻夫木聰 ╳ 佐藤浩市 主演

改編自2000年3月撼動日本社會的地鐵脫軌事故

2024年，經營餐廳的寺田薺菜（綾瀨遙 飾）寫了一封信給一位年輕人。24年前，17歲的薺菜（當真亞美 飾）暗戀著高中生富久信介（細田佳央太 飾），兩人每天早上都在同一班列車上相遇。信介品學兼優，夢想著成為職業拳擊手，放學後便到拳擊館埋頭訓練。然而，2000年3月8日，信介沒能搭上往常8點17分出發的列車，薺菜第一次得知信介的名字是在電視新聞播報的罹難者名單。2024年，薺菜的情書在陰錯陽差之下，寄到了信介的家中。信介的父親龍二從信中感受到了兒子曾經活著的證明，從中了解了兒子不為人知的青春歲月和成長歷程，於是，龍二也回了一封信給薺菜。原來，看似家庭美滿的薺菜，有著一個不為人知的祕密。

In 2024, Nazuna, who runs a small diner, writes a letter to the young man she once loved from afar. Twenty-four years earlier, at 17, she secretly admired Shinsuke, a high school student she saw each day on the train. While attending school, Shinsuke also pursued his dream of becoming a professional boxer. They begin to form an unspoken connection until, on March 8, 2000, Shinsuke is killed in the tragic Naka-Meguro train disaster. When Nazuna’s letter reaches Shinsuke’s family, his father Ryuji discovers tender traces of the son he lost: glimpses of his youth, longing, and inner life he had never known. As Ryuji begins writing back, an intimate exchange of memory and grief unfolds. A moving reflection on loss, remembrance, and the invisible bonds that endure, the film turns private sorrow into a deeply human story of love and grace. Inspired by a miraculous true story.