Sumika Inaba

is a classmate and friend of Kukuri Yukizome.

Appearance
Sumika is a curvaceous girl with large breasts. She has long, dark blue hair styled into a traditional Hime cut and blue eyes.

Sumika wears the female uniform of Ashinaka High School, which is essentially a Sailor fuku. She wears a black shirt tucked underneath a dark blue jacket, which has a lavender bow on the front, as well as Sumika's green school pin. She wears a dark pink, frilly layered skirt with an additional dark pink bow on the back of it. Sumika completes her outfit with thigh-high stockings and black shoes.

Personality
Sumika is a conservative girl. She usually stays quiet though Sumika can be friendly when spoken to.

Plot
One day, Sumika is about to have lunch with Kukuri when she notices the latter eying fellow student, Yashiro Isana. Sumika listens as Kukuri states her plan to share her vegetables with Yashiro. She is then left alone when Kukuri chases after Yashiro to do her work. Kukuri is unable to give him her vegetables and ends up eating in the school cafeteria with Sumika, who takes a bite from her food. Sumika comments that Kukuri's in love.

Sumika later attends class with both Kukuri and Yashiro. Throughout the class period, she constantly glares at Yashiro. During one instance, she blushes with embarrassment when she sees Neko appear with a school uniform. At the end of the day, Sumika and Kukuri watch as their classmates continue production for the festival. Sumika expresses her wonder as to whether Kuroh or Neko are actually transfer students like Yashiro said.

One morning, she helps paint wood for the school festival. When Kukuri appears asking whether there are students available to help with additional work, Sumika points out that they are all already busy. Furthermore, she pokes at how awkward it is between Kukuri and Mishina as they are walking away, though she quickly expresses exasperation when Kukuri still needs people to go with her. Sumika joins them to a supposedly vacant room in the males' dormitories, where they discover that the room is not as unoccupied as they are told. Sumika suggests that "that guy" is spending his time in the room, though she quickly loses memory of who the person in particular really is.

Later, she bears witness as the vacant room suddenly explodes while she is outside. Sumika nervously tells Kukuri that the person she was referring to most likely did not carry explosives inside.