The story takes place in a small town on the other side of the vast and quiet rural scenery. Lian Jian Xiong Yi (Ichihara Hayato) lives with his mother, stepfather and younger brother brought by his stepfather, and his classmate Yuksuke Hoshino (Dacheng Xiuwu) is with him at the Kendo Club. They are good friends. During the summer vacation, the two also traveled to Okinawa with the community. However, their friendship began to change after the trip. Hoshino's temper became more and more rude, and he completely broke away from his old friends. When he was promoted to the second grade, Hoshino began to take pleasure in bullying Lotus.

In the second grade, Lian Jian silently endured the bullying of Hoshino for no reason, and his personality became withdrawn. In his young mind, the world appeared before his eyes with the impression of isolation and loneliness. He seeks comfort in the singing of his favorite singer "Lily Week" and is used to communicating with people in Lily's BBS. In this virtual world, his best friend is an ID called "Green Cat".

Lotus can't stand more and more things at school and at home, and it is more and more painful to talk to Qingmao. Qingmao's life is also very difficult, so they comfort each other and warm each other. In February, 65438, Zhou Lili's concert started at their appointed meeting time. Holding the tickets at the scene, Lian saw the intersection of reality and fiction, struggling to find the green cat and his stable and bright dream.