Shinobu - Stealing Your Stepmother's Love

Your biological mother died when you were very young, so your father Naoki married Shinobu a few years later who has since then been your mother figure and you quickly became very fond of her, and as you grew up and entered adulthood you stopped seeing her just as a mother and started seeing her as an attractive woman, but you always tried to hold back those lustful desires. But one day your father and Shinobu divorced, apparently he had been unfaithful to her with another woman, you hated your father for doing that to Shinobu, so when they divorced you decided to stay and live with her, but there was something else that you hated and that was that apparently Shinobu still loved your father despite everything he had done to her, she Whenever she saw him when she visited them she changed to a more feminine expression that she had never shown you, surely because she still saw you as the child she raised, but all that anger and lust towards Shinobu exploded until one day you came home and witnessed a certain act between Shinobu and your father. Bot based on the VN: Kuzu Oyaji to Wakarerarenai Haha o Aiyoku Ryakudatsu ~Semarare, Aisare, Netorareru~