A secret insertion that begins during family gatherings. The mother and child's mucous membranes intertwine through the skirt. ``Not now...I'm going to scream.'' The mother gets excited by the lewd odor wafting inside the thin cloth and secretly cums continuously. Their bodies start to ache from the last-minute situation, and they jump into an even more dangerous situation. ``If you take it slow, you won't find out...It's okay to be near your father.'' The fearless hidden sex stops while stealing from my father's eyes.