I creampied my wife's mother

I'm not dissatisfied with my wife. However, the sexyness of her stepmother Arisa was so seductive that she was captivated so much that she forgot about her wife's existence. This feeling should not be known to anyone. I told myself this and kept my feelings hidden. However, one day, my wife was forced to leave her house for a company training session, and asked Arisa to stay at her house as a guard to prevent infidelity. I'm alone with Arisa in my house without my wife. This is a once-in-a-lifetime situation that came as if it had rained down. A night begins when reason and instincts are shaken.