Takeyuki meets his son's ex-girlfriend "Ai" for the first time in several years. Ai has grown into a woman with a body that still retains her innocence, but Takeyuki protects her from sexual harassment. Takeyuki once happened to see the two young people having intense and clumsy sex at home. "I made dirty noises on purpose for the old man..." Takeyuki once again let the young girl do as she pleased with him. And once again, he couldn't refuse Ai who approached him, saying "I wanted to see you, old man"... [Specially selected novel] A film adaptation of "My Son's Lover" by Miyuki Fukashi.