I got a sister named Suzu from my parents' remarriage. She was cute and kind, and I thought we hit it off right away, intending to be close siblings. But as soon as I got a girlfriend, my sister suddenly changed. Jealous Suzu started showing me her favorite panty shots and seducing me. Usually we were good siblings, but due to too much provocation I ended up getting an erection and finally crossed the line.
