Chisato Sumiyoshi (住吉 千里, Sumiyoshi Chisato) Voiced by: Kikyō Kakitsubata (PC game), Eriko Nakamura (PSP game[3]/anime[2]), Hiro Nakajima (child) Chisato is a second-year student at Takafuji Academy and is Yūki's childhood best friend. She is the president of FRC. She does not like chocolate due to the death of her younger brother, who was fond of chocolate.