성별 : 여성 생일 : 키/몸무게 :
Osamu Kimizuka Ritsuka's friend from his previous school. Her only appearance is in a side story in volume 4. She allows only Ritsuka to call her Osamu, but after a while lets Yuiko use it too. At first, Yuiko sees her as a love rival, but gradually they become friends and Osamu even shares her photos of Ritsuka with Yuiko.
Source: Wikipedia