My Gorgeous Older Step-sister That I Should Never Ever Touch Isn't Actually Related To Me By B***d... Step-siblings Cross Into A Different Type Of Relationship With A Forbidden Creampie Load That Happens On A Summer Day. Yuuka Aota

At the end of summer, with lingering heat, I returned to my family home for my mother's 17th memorial service. Every year, no matter how busy I was, I made sure to come back with an excuse, all because of my older sister, Yuka. She was the woman I admired, who had taken care of me like a mother ever since we lost our mother when we were children. Now we're both married, but I've always harbored feelings for my sister that go beyond sibling love. Then that night, after the memorial service, my father called us and revealed that we are not actually brother and sister...