I met my niece (my sister's daughter) for the first time in 15 years and she had grown up so much... Her big, perky breasts were visible even through her clothes. Her expression stared calmly at me as if she could see through my hidden masochistic nature. I, her uncle, couldn't resist and ended up getting involved in a forbidden relationship. I later found out that she was a step or two ahead of me. It was all a trap set up from the beginning... I, an old man who was completely hooked on my niece, a college student with an H cup, was seduced by her loose lewdness and fell into a sweet relationship in a room in an apartment. A girl 19 years younger than me licked my nipples and made me cum many times in a cowgirl position, moaning and groaning. Seeing my uncle like that, my niece said, "Uncle, you're so cute when you're so pathetic..." and hearing that made me even more erect... This was an extremely younger girl, and a relative at that. A sex story about a middle-aged man who is constantly manipulated.