Takeshi, the son, is looking at his cell phone. His mother is sitting next to him. His mother is massaging his feet with oil. Seeing this, Takeshi says, "I'll do it for you," and gives his mother an oil massage. His mother begins to feel good, letting out a soft sigh and saying, "It feels good." His mother asks him to go further up, all the way to her thighs. His pleasure grows, and Takeshi gets so excited that he massages her all the way to her groin, and slowly starts to touch her crotch. They both get turned on and move from kissing to passionate sex...