Ep. 1: Cinco chicas despiertan en una mansión sin ventanas, iniciando un mortal juego de supervivencia.

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In a windowless Western-style mansion, dressed in a classical maid uniform, Yuki awakens on an unfamiliar bed. Standing before her are five girls who arrived earlier, each still struggling to comprehend the circumstances they’ve been forced into. Breaking the silence, Yuki speaks. "So… is this everyone’s first time?" And with that single line, the curtain rises on a deadly game—one played at the cost of their lives.