Midori Utsumi is a Japanese voice actor from Setagaya, Tokyo, born with the birth name Mieko Utsumi. In the anime series Manga Hajimete Monogatari, she provided the voice for the character Big Sister in episodes one through nineteen. Beyond this role, her voice work includes performing the Japanese voice for the character Lucy Van Pelt in the animated television series based on the Peanuts comic strip, as well as the Japanese voice for the title character in the Argentinian animated film Mafalda. In her personal life, she was married to fellow actor and voice actor Kin'ya Aikawa, who was known for voicing characters such as Kamesennin Muten Roshi.