It's been about four years since my wife and I got married. This man is my biological father. After my mother passed away, we've been living together as a family with my wife. And the woman here is my wife's mother, my stepmother. Occasionally, my stepmother would come to our house to see my wife, and we lived peacefully. However, what happened... my father got involved with my stepmother in that way... I couldn't even speak, I just stood there dumbfounded...