Kasumi Arimura is a Japanese actress. Her television roles have included the young Haruko Amano in the 2013 NHK asadora Amachan and the lead role in the 2017 asadora Hiyokko. She has also appeared in several films, including Flying Colors, for which she won a 39th Japan Academy Film Prize for Newcomer of the Year, and We Made A Beautiful Bouquet, for which she won the 45th Japan Academy Film Prize for Best Actress.

Amachan (あまちゃん) is a Japanese television drama series. It debuted on April 1, 2013, and was broadcast until September 28, 2013. It was scripted by Kankurō Kudō and starred Rena Nōnen as Aki Amano, a high-school girl from Tokyo who moves to the Sanriku Coast in the Tohoku region to become a female diver. She becomes a local idol, then returns to Tokyo to try to become a real idol, and finally returns to Tohoku to help revitalize the area after the Great East Japan earthquake. It is the 88th NHK Asadora. Amachan was not only a ratings success, but brought economic benefits to the Tohoku region and was considered a social phenomenon. It also won the Galaxy Award for best television program of 2013.