Sumi Saimori

Sumi Saimori (斎森 澄美, Saimori Sumi), née Usuba (薄刃), was a member of the Usuba family. She was the daughter of Yoshirou Usuba, the first wife of Shinichi Saimori and the mother of Miyo Kudou. She died from illness when Miyo was two years old.