PGD-847 Seduced by the older sister I admired who was about to get married... Yui Hatano

My childhood friend Yui-nee is about to get married. The person she married was a brother who lived in the neighborhood and was like her own brother. The two of us were supposed to be a good match, but I couldn't congratulate them from the bottom of my heart...One day, my older sister showed me her true face that she had never shown to anyone else. Her appearance is unbelievably lewd compared to the usual neat Yui-nee... ``I'm going to marry that person, but I don't want to have a lot of sex with him.''