The person who called Ryuto to the gym at night was actually Maria. She confesses her desperation to become Ryuto's first, even if that means dressing and acting like Runa. Ryuto is shocked. As the two talk it out, someone else watches from the shadows.
You didn't abandon her when she was crying.
.لم تتخلّ عنها عندما كانت تبكي
Du wolltest sie nicht
mit ihren Tränen alleine lassen.
Tu ne l’as pas abandonnée
alors qu’elle était triste.
Non l'hai abbandonata mentre stava piangendo.
Você não a abandonou
quando ela estava chorando.
Ты не бросил её плакать одну.