Every time he visits her house, Koji becomes more and more infatuated with her mother, Ayame Ichinose. The strength she showed raising her daughter alone, the kindness and inclusiveness with which she welcomed him, and the fragility she carried as a widow, reflected a mature charm that gradually drew him in. One day, he accidentally catches a glimpse of Ayame pleasuring herself. Her neck is stained red, her breath is hot and ragged, and her relaxed, wanton appearance is too much for Koji to resist...