VRPRD-104 - VR, Younger Sister Obsessed, My Beloved Older Brother is Mine! Before I knew it, I succumbed to the temptation of her developed body and skillful techniques...

My younger sister is abnormal! When she was little, it was a typical sibling complex situation where she said, 'I'll marry my older brother!' But even as she grew older, she didn't change and clung to me even with our parents around, never leaving my side. Eventually, even though she was already an adult, she said, 'Let's take a bath together,' showing no signs of puberty at all! I finally tried to tell her off and warned her once, and she cried terribly and raged madly, so now I tolerate my sister's violence...