Masumi joined NHK in 1991. In 1995, she was transferred to the Natural History Unit of the Program Production Department. Since then, she has produced programs about nature and wildlife in various parts of the world. Her past work in this genre includes the ‘Global Family’ and ‘Wild Secrets’ series, which were major attractions among NHK’s output. Her work reflects a deep interest in water and in the coexistence of people and nature.