Hikari, a friend of his mother's, ends up staying overnight at their house after returning from her local high school reunion. Her son, Hiroki, struggles to control his inner turmoil. Dreaming of reuniting with his first love, he drinks too much in anticipation of seeing her and blacks out. When he wakes up, he finds himself alone with Hikari, and memories of his past feelings resurface. Unable to resist as the drunken woman moves in to kiss him, his desire surges, and their relationship quickly deepens. Innocent emotions intertwine, giving birth to a new, unexpected passion.