The 19th installment of a documentary-style series depicting forbidden parent-child relationships. This time, a mother finds herself emotionally stirred by her son, who bears a striking resemblance to her husband in his youth. She sneaks into her son's apartment and forcefully grabs his cock, bringing it to full erection. Surprised by her own actions, she still dares him with bold words: "You can go ahead and penetrate me." The son, flustered yet unable to resist, finally takes that forbidden step. Meanwhile, the father, living apart for work, harbors intense curiosity toward his daughter's body. When she comes to Tokyo for a job interview, he offers her a place to stay. Pretending to apply moisturizing cream, he gropes her breasts. Unable to voice his desires directly, he's met with a shocking confession from his daughter. Witness how this taboo relationship unfolds in a realistic, documentary-like narrative.