The 37-year-old Edamatsu Shino (Subaru Kimura) aspires to become a novelist and participated in the literary award ceremony hosted by “Reishinsha”.He has not won awards for many years, and his main source of income is working to get rid of pests. However, his novel - Spring and Ultramarine - won the Newcomer Award this time.However, Zhisong always felt uneasy.

Half a year ago - Zhi Song received a time capsule buried in middle school.After 25 years, the time capsule committee dug it out and sent it to their respective owners.Among the popular nostalgic items at the time was a notebook with no memory!The cover says “Spring and Ultramarine”, a romance novel written in a woman's handwriting.

Edaco plagiarized the novel in his notebook, won an award and got the opportunity to serialize it. The beautiful girl Katayama Miharu (Yuai Shinkawa) became his editor-in-chief.

Feeling guilty, Edao told his working junior Mitsuru Kaneko (Kou Maehara) about plagiarizing the novel. Edao planned to find the real author and began to recall his female classmates in high school...