She is the character of the day during "Terror! The Curse of the Well".
Natsumi is the daughter of a Christian church running family. She is Nobuaki's good friend, although their families suffer from a persistent conflict.
Natsumi has dark grey, short hair and a mushroom head. She has green/grey eyes and wears glasses. She is light-skinned.
She wears a grey sweater and a long, black skirt. Her socks are white and her shoes are dark grey.