“You’re a virgin, shall I nip you?” It’s natural for the ex-girlfriend’s sister-in-law to have her panties fully exposed! Vulgar and erotic! She always makes fun of me for being a virgin, but she was amused by how excited I was about my panties, and one day she made an attractive invitation! In fact, my super-sensitive sister-in-law got so excited that she ended up giving me a brush! Iori Nanase