Nagomu Irino returns to his Kyoto home for the first time in ten years when his father is hospitalized. Nagomu is eager to take over Ryokushou, the family's Japanese sweet shop, but he's instead asked to be a father figure to Itsuka Yukihira, the girl everyone calls the successor. (Source: Manga Translation Battle)
Asano began serializing the slice of life manga in the monthly seinen magazine Young Ace in May 2016. Kadokawa released the tenth compiled volume in November 2020. The 11th volume will be released on May 1.
ComicWalker page: https://comic-walker.com/contents/detail/KDCW_KS02000041010000_68/
Source: Comic Natalie