In the quiet confines of their shared room, Ichika, Itsuki, and Yotsuba can't help but eavesdrop on Miku and Nino's hushed whispers and stifled moans. Their curiosity piqued, they sneak a peek to find Miku straddling Nino, their bodies entwined, Miku's bare breasts pressed against Nino's chest. Ichika gasps, Itsuki's eyes widen, and Yotsuba bites her lip, their own desires awakened by the taboo scene unfolding before them.