A 27-year-old woman, named Eri, drops into a cafe in Nagoya for the first time in 20 years. There, she meets a new master and she starts small talk without telling him that his father is actually her biological grandfather. Her biological grandparents got divorced when her mother was a kid, but her mother took her there for the first time when she was six because she wanted her to meet her biological grandfather. Then her mother got shocked to find out that she has a half-brother, whose scene Eri was curious to witness as a kid. But nobody ever told her the facts. By talking with the maternal half-uncle, she ends up confirming family secrets and accepts the past.