The protagonist is 33 years old and working at a publishing company. His sister registers him on an app for people looking to get married. He goes on a date with an author, the girl he matched with, but she has a secret. The love story of an awkward and eccentric pair.

Yoshida was swiftly rejected by his crush of 5 years. On his way home after drinking his sorrows away, he saw a high school girl sitting on the street. "I'll let you do it with me, so let me stay". "Don't even joke about something like that". And so, the story of living with the high school girl Sayu began. The slice-of-life romance story between a runaway high school girl and a 26 year old salaryman ensues.