Ai has had a crush forever on her classmate Tatoe. When she finds out that Tatoe is in a secret relationship with another girl, she sets out to sabotage their plans for the future.

改編自綿矢莉莎的小說作品的電影《手寫信》由山田杏奈飾演校內很受歡迎的高中3年級學生木村愛，愛從高一開始就一直被在教室裏默默度過的樸素男子即若（作間龍斗）所吸引。但是，偶然看到他小心翼翼地讀著別人的信的樣子，於是偷那封信。寄信人是患有糖尿病的陰沉少女新藤美雪（芋生悠），愛是第一次知道兩個人正在秘密交往。不久，愛隱藏了自己的心情接近了美雪，於是愛、美雪和即若開始三角關係，事態朝著意想不到的方向發展。

21st Century Girl is an omnibus feature that is of the girls, by the girls and for the girls. The work of 15 women directors under the age of 30, each of whom contributed an 8-minute film, the package highlights a range of genres, visions and thematic concerns.

Set in the near future around Shinjuku, Tokyo. Shinji got out from a youth detention center. Barikan suffers from stuttering and extreme shyness. These two men meet in a boxing gym. Shinji and Barikan become friends and pursue boxing under a hopeless situation.

2017 Japanese two-part film by Yoshiyuki Kishi