这是一部由岩井俊二执导的爱情电影，这是一部很日系的治愈系电影，影片全程简简单单，却又看完以后让人不能忘怀，该影片讲述了，悲痛的家属们正在这里举行远野未咲的葬礼，岸边野裕里送别了心爱的姐姐，遇到了姐姐的女儿，也将信件转交给他，但是女孩悲痛的心情无法打开那封沉甸甸的信，里面是贺井高中同学聚会的邀请函，最终她决定替姐姐参加，在同学聚会上，遇见了自己曾在高中暗恋的镜史郎，在聚会上大家把她当成了姐姐，她本来想公布姐姐的死讯，但是还是没有说出口，此后，拥有了联系方式的俩人，开始了信件的往来，在一封封书信的联系中带我们回到了他们的中学时代，串联起了三人曾经的故事，情感纠结里的成全，不甘和错过，在到最后的释怀，仿佛是一个轮回

This is a love movie directed by Shunji Iwai. After watching it, people can’t forget it. The film tells that the grieving family members are holding Tono Misaki’s funeral here. Kishibe No Yuri bid farewell to his beloved sister, met his sister’s daughter, and handed over the letter to him. But the girl couldn't open the heavy letter because of her grief, which contained an invitation letter for the class reunion of Kajing High School. In the end, she decided to attend the class reunion for her sister. Everyone regarded her as an older sister. She originally wanted to announce the news of her older sister's death, but she still didn't say it out loud. After that, the two people who had contact information started exchanging letters, and the correspondence between letters took us back to their In the middle school days, the stories of the three of them are connected in series. The fulfillment in the emotional entanglement, the unwillingness and the miss, and the final relief, seem to be a reincarnation