My sister is very beautiful and has a great figure, but she's actually a siscon. During the three days my parents were away on vacation, my sister was eager to have sex with me and seduced me with her defenseless appearance and big ass! While I was brushing her off, my sister's seduction escalated! At first I kept my cool, but before I knew it, I was captivated by the attractive and obscene big ass that bulged out from my sister's waist... Once we crossed the line, we had raw sex and came inside her many times! It was three days of lovey-dovey sex like lovers!