Kanoko, the only daughter of the 160-year-old Kyoto confectionery shop "Aotsuki," dreams of sharing her beloved Japanese sweets with many people. She joins her grandfather's factory, where he is the foreman, to learn how to make Japanese sweets! Her relationship with her childhood friend, Souya, the second son of a tea family and three years her junior, is also a point of interest!
(Source: Hakusensha, translated)
— Description from AniList community (anilist.co).