Appears in Ayatsuri Yashiki (Marionette Mansion). Natsumi is the youngest of the Kitawaki kids and is often scolded by their father for not moving the puppets correctly, but she still loves him. Shortly after she was born, their mother abandoned the family. Years later, when she reunites with Yukihiko, Natsumi marvels at his lifestyle and wants to be part of it as well.