UGUG-052 - Mother is a zero, son is a tyrant. Days of humiliation taking the son's lust with her body

Dad is long gone, and now the son is the king of the house. A loser outside but a tyrant inside. Fearing what others might think, the mother caters to her son's every whim, eventually becoming his plaything. Enduring the beastly demands of her son, she slowly awakens to a dark, perverted pleasure.