Keita Sasahara was introduced to Riko by his friend Mika Kuramoto, a close acquaintance of hers. They quickly fell for one another and became a blissful pair. Yet two months later, Sasahara saw Riko boldly kissing another man. That evening he joined Kuramoto and a few other friends for drinks, eventually heading to her flat.
On the walk back, Kuramoto discovered that the man Riko was kissing was actually Shunpei, her own boyfriend, adding an unexpected twist to the night. The two friends drank away their sorrow together—and as time slipped by, a sexual tension blossomed between them, culminating in an erotic and passionate night.
