All six of my sisters are trendy, outgoing gurls who are naturally promiscuous! But as for me, the younger brother, I'm a geek and a virgin. I have absolutely no immunity to women! So, no matter how much they are my sisters, if I see them wandering around the house in revealing, sexy outfits, I inevitably get an erection. I tried to hide it, but one day my erection was discovered, and just as I was bracing myself for being called disgusting and berated, surprisingly, my sisters, whose promiscuous hearts were tickled by my erection, started competing to target my virgin penis...
