|Relatives||Keiji Sakashita (Father)
Yoshihiko Ochi (Sex partner)
Chiaki Sakashita (坂下千秋, Sakashita Chiaki) was a student at Takizono Private Academy and the captain of its basketball team in 2005.
A third grader of Takizono Private Academy who served as the director of the basketball club. She comes from a wealthy family. Due to her coercive personality, she wasn't trusted much by other members.
She got captain position after Minori turned it down.
She was the first to witness the acts of cannibalism Yoshihiko committed. It is unknown how long she survived after her confrontation with Kazuki Kazami and Amane Suou when she was discovered having sex with the teacher Yoshihiko Ochi after going insane . She was bed-ridden after her injury caused by a fellow student.
She and the remaining students died of infection caused by consumption of disease-stricken human flesh.
- It is unknown what her relationship was with Yoshihiko Ochi, most likely it was out of pity because of his weak-willed nature.
- Hinted by a fellow classmate, she would have sex with Yoshihiko as her way of forgiving him of the heinous acts of cannibalism.
- It is implied she was weak-willed and arrogant because of her easily forgiving nature and her numerous arguments with Kazuki.