Upon hearing that his father has been hospitalized, Nagomu—the prodigal son of a family owning a sweet shop in Kyoto—returns home after 10 years to take over the family business. Nagomu is eager to do it, but he’s instead asked to be a father figure to Itsuka, a girl who started working at the shop while he was gone and whom everyone now calls the successor.

[Source: Crunchyroll]