The ordinary senior high school boy Ye Shan Yingzhi (Murakami Honglang) bumped into the beautiful girl Zhi Bu Zi (see Mingli early) on his way back late. The angelic face of the other party moved Eagle's heart, and has been infatuated with each other ever since. After meeting again, the girl talked and laughed like an old acquaintance, and their relationship unfolded naturally. However, to the surprise of Yingzhi, Zi's classmates claimed that there had never been such a classmate in the class. Afterwards, from Zi's mouth, he heard a shocking fact that all the people who met Zi would gradually lose their memory of her. Yingzhi could not believe this, and firmly vowed that he would never forget Zi. Who would have thought that the two people who were in love would reach the other side so quickly. When Zi discovered that the eagle was strange and reluctant, he realized that nothing could be called forever. This film is based on the original novel of Hirayama Mizuho.