My brother, who is studying hard for his exams, has been struggling lately because he can't stop fantasizing about having sex with my sister. When she caught him staring at her inappropriately, she pointed out that he should focus on his studies instead. Despite being rejected when he boldly asked for SEX, he doesn't give up easily. Instead, he proposes something unexpected - if her pussy isn't good enough, then let him lick her ass! Although reluctant at first, my sister eventually agrees due to his persistence. However, as time goes by, she finds herself enjoying the anal stimulation more and more... It turns out that without my brother's ass-licking skills, she simply cannot handle her own body anymore!