Amai Ijiwaru
Rina, Kotori’s shy and submissive friend, is barely noticeable but maintains a friendly relationship with her. One day, Rina confronts Naoto, appearing semi-nude, showing him her breasts and a phone with recordings of her sexual encounters from paid dates. She threatens to keep it a secret from Kotori if Naoto gives in to her advances, leaving him with no choice but to comply.