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're the first boy 
who has ever confronted me like that.
.أنت أول صبي يواجهني على الإطلاق بهذه الطريقة
der mir derartig mit Ehrlichkeit
und Offenheit entgegengetreten ist.
Eres el primer chico que me frena así.
Eres el primer chico
que me para los pies así.
Tu es le premier garçon à m’avoir dit
les choses en face, Kashima.
Nessun ragazzo mi aveva mai affrontato così.
Você é o primeiro garoto
que me confrontou assim.
Ты первый парень, который вот так
меня осадил.