Mika Kuramoto

When Sasahara discovers his girlfriend, Riko, kissing another man. Totally devastated, he decides to drown his sorrows in alcohol along with Mika Kuramoto, a good friend of his, and two other friends. When he gets totally drunk, Mika decides to accompany him home. While they are at it, Mika finds out that the man Riko was kissing was none other than Shunpei, her boyfriend. Mika, who is also now heartbroken, invites Sasahara to her house so they can continue drinking. There, victims of their sorrows and alcohol, both decide to give free rein to their passions.