i returned to my parents' house for the first time in 3 years due to work, and i lost my reason when i saw my sister's panty shot, who had become a proper j-type... i hooked her with pocket money and her demands escalated! when i showed my big dick to my teenage sister on a whim, she became very interested, and i became obsessed with her panties while her parents were away, and my days were filled with taking them off and putting them back on...