Keitai Deka Zenigata Rei
Zenigata Rei (Kaho) is a a middle school student and math prodigy that also works as a secret detective. She uses her IQ of 180 to solve the mysteries of various difficult cases one after another.

Zenigata Rei is a math prodigy in middle school. She receives a special assignment from her grandfather, the Superintendent General of the Metropolitan Police Department, and together with Detective Takamura, with whom she forms a partnership, she uses her IQ of 180 to solve the mysteries of various difficult cases.