NSPS-691 — My Best Friend's Wife Is Sleeping With Me! Even After Being Violated, The Violent Sao Remains Strong. Ian Hanasaki

Ayumi is a wife who cares about her family. Her husband's best friend has been thinking about her for a while. One day, when her husband's best friend was drinking at home, he did something unexpected to her. After that, his wife changed. What was that unexpected thing?