A look back in time at the events that set everyone on their current paths. Rena's envy for Yuki drives her to a desperate impulse. Manager Yamamoto and Nikaido Rui race to hide a corpse.
I'm the one who injured her 
on the stairs in high school.
.أنا من دفعتها من الدّرج في الثّانويّة
Es war in der Oberschule.
Fui yo
Fui yo
Sa blessure, au lycée.
Quando eravamo alle superiori,
Eu que a machuquei
na escadaria do colégio.
В школе…