Natsumi ナツミ

Natsumi is Hakase's granddaughter. She is 14 years old. She often treats Kakeru like her little brother. Natsumi can be bossy at some times, but she can get lovey-dovey when Hiroki saved her life in Episode 36 of Season 2 from Pink Monkey. Natsumi can be terrible at cooking, which made Hakase and Kakeru puke.