Due to our mother's remarriage, my brother and I suddenly gained a busty and adorable new sister. She usually dressed very lightly, and her exposed, carefree appearance constantly turned us on. But one day, her true nature surfaced—revealing her arousal for scent fetish and her increasingly perverted thoughts. Moaning in a seductive, childish voice, she began sniffing the scent of my crotch and enticingly moving closer. Her actions only deepened our attraction, awakening new, forbidden desires within us.