When my girlfriend wasn't home, her sister came to help with chores, and her alluring, perky buttocks became irresistible... Hibiki Otsuki SORA-582

My girlfriend and I were going on a week-long trip, and she was worried I wasn't good at housework, so she asked her sister to help. Turns out, her sister was a beautiful woman with a stunningly voluptuous figure! I couldn't resist her sister's unconscious teasing and became aroused, unable to suppress my desire…