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サクラ咲く
东京多摩市的若美谷高中迎来新的学年，新生冢原（新井爱瞳 饰）性格内敛羞涩，热爱读书，与周遭环境格格不入。某天她在图书馆借书时，发下书里花落了一张纸条。纸条上的文字引起冢原的好奇心，她不自觉想要找到纸条的主人。与此同时，三年级原戏剧部成员立花亚麻里（吉川友 饰）在图书馆读书时，引起了二年级学生一平（真剑佑 饰）的注意。后者希望亚麻里无论如何都能担当他执导电影的女主角，结果遭到对方严词拒绝。樱花烂漫的季节，两个女孩在各自的道路上悠然前行…… 本片根据辻村深月的同名原作改编
As the new school term begins at Wakamiya High, shy bookworm Machi Tsukahara feels out of place in her lively class. One day, she finds a mysterious note in a library book with the word "Sakurasaku" written on it.
Machi, following her mother’s advice, responds to the mysterious letter she found in a library book, leaving her reply inside the same book. Will the original sender discover her response?
Ippei suspects the book Amari requested doesn’t exist, prompting the film club to investigate her past through Mine, the newspaper club head. Meanwhile, Machi exchanges letters with the mysterious figure through library books.
The film club, still unable to find the elusive book, wishes for Amari to return to the stage. They create an original picture book with a new ending based on the jeweler's story she once read, hoping to convince her.
