Due to my father's remarriage, my stepmother, sister, and younger sister are all nudists and always naked… but considering I was a student preparing for exams, they started wearing clothes at home for my sake. As a result, the buttocks and breasts that were too exposed and thus not erotic became panty shots and cleavage views, and seeing just a bit of them felt strangely erotic—my first erection with family! Since then, my mind has been full of panty shots… I thought I was going crazy, so I locked myself in my room. Then, worried family members came and flashed me, causing me to get an erection again…
