The older sister-in-law's lack of vigilance and failure to wear a bra led to moral decay... Forbidden breast sucking continued for 3 days. (Yume no Aika SSIS-835)

During my school days, my brother often brought his girlfriend (Aiwa) home, and they would make love in the next room. She was cute and charming, with a large bust... I really envied my brother for having such a perfect girlfriend. I told her I was going on a business trip to Kyoto, and she agreed to let me stay overnight. Seeing Aiwa again after so long... she was completely unguarded, not wearing a bra, which made my heart race and left me bewildered. My brother often came home late from work, and our sex life was a ridiculous waste! It was such a pity to see such a charming woman! In a moment of impulse, I pushed her down, only to discover that Aiwa was also sexually unsatisfied...