Ruka is hellbent on knowing the full story behind Kazuya and Chizuru's relationship, and once she does she decides to take action.
So she was after this all along.
!كانت هذه نيّتها من البداية إذاً
Darauf hat sie es also
die ganze Zeit abgesehen.
Conque ese era su objetivo.
Así que este era su plan.
C’était son intention
depuis le début.
Come temevo, voleva questo fin dall'inizio...
Então era esse o plano dela.
Значит, она была готова!