NSFW
Stepmother's Sin (義母, Gibo) is an OVA hentai based on Guilty's eroge visual novel which consists of two episodes that was produced by Digital Works.
Plot Summary
Yusuke Yagami is a high school student in a sexual relationship with his cousin Mio. However, it is not out of love. Aside from sex, Yusuke holds immense distrust towards women which is due to events in his childhood. His parents divorced when he was a child due to his mother's infidelity, moreover he personally witnessed his mother's adultery with his own eyes. From then on, his mother changed from the his most beloved and trusted person to a hateful traitor, which extends to all other women except Mio.
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