Maiko, who lost her husband early and raised her infant Kosuke splendidly by herself. However, as her son began to resemble her beloved husband, her body writhed in secret desires and continued to emanate alone. Kosuke also had more love for his mother than his family, and he spent his time hiding his feelings for each other. - And finally, on the eve of Kosuke's marriage, he handled his with a loving hand, saying, "Only tonight, the first and last ...". - However, the lust that has been hidden for many years drives the two to further pleasure ...