While being assaulted by her boyfriend, Sayaka exudes a strangely alluring aura, sparking a new shift in their relationship. Koyoru finds herself drawn to Sayaka, attempting to control her actions by watching her have sex with her boyfriend or performing lesbian acts with Sayaka in front of him. As Koyoru becomes increasingly obsessed with Sayaka, she realizes she is losing control, captivated by her irresistible charm.