Makoto had long harbored secret feelings for Eri, his friend's mother. When he visits his friend's house after a long absence, he's deeply moved by Eri's unexpectedly affectionate and seductive behavior toward him. Her gentle yet provocative demeanor continues to stir his emotions. Unable to forget the encounter, Makoto decides to see Eri again. But in that moment, all his suppressed desires explode. He pins Eri down and finally releases his pent-up passion. From this fateful meeting, his intense feelings for her only grow deeper.