Birthday: March 3, 1978

Horoscope: Pisces

Blood Type: B

Height: 162cm

Bust, Waist, Hip: 90cm, 56cm, 85cm

Origin: Okinawa

Otohime is similar to Keitaro because she has also tried to get into Toudai for 3 years in a roll. Unlike Keitaro, she is not dumb. She could easily pass but she always fainted before the test and was taken to the hospital or she forgot to write her name on the test. Later she becomes a study buddy with Keitaro and Naru. She helps to provide some comic relief for the series because she is sometimes clumsy. She gives Tama to Naru and Keitaro as a present, which soon becomes a pet for the residents in Hinata Sou. She also gives both Keitaro and Naru their first kiss. She is thought to be the girl of Keitaro's promises. From the photo of Naru's past, it looks like Mutsumi was the girl who made a promise with Keitaro. But she is not. She also has a promise to get into Toudai with someone in her childhood memory. She seems to understand turtle language.