In the morning, as usual, the mother enters her son's room to wake him up, but today he seems more tired than usual and won't get up easily. Slightly exasperated, she quietly watches over him as he lies there. Suddenly, she notices a faint twitch beneath his underwear, pulsing gently. It's just a natural morning bodily reaction, but without realizing it, the mother begins to check his condition closely. Unable to resist any longer, she gives in to her urges, reaches out to her son's body, and unexpectedly crosses the line into an intimate relationship.