Oginome Momoka

Japanese name:

荻野目 桃果

Ringo's older sister who died in a subway explosion on the day of Ringo's birth, and the original owner of her diary. She was friends with both Tabuki and Yuri.
spoilerHer diary is allegedly one that can transfer the fate of individuals, such as preventing someone from dying. However, these transfers inflict injuries on the user as payment, with more drastic fate transfers resulting in larger and even fatal injury.

MAL