"I'm sorry, Dad. I crossed the line with my new family." After my parents divorced, my father took me in and I was welcomed by my beautiful stepmother and adorable step-sister. We went to a hot spring resort on a goodwill trip, but late at night, I peeked at my parents having sex with my step-sister. I got excited watching, and ended up having sex with my step-sister. In fact, my step-mother saw me... Just when I thought it was all over, the throbbing in my crotch started to attack me uncontrollably! I had a oyakodon in one night.