Replying...
Intro. Our family is poor. When my uncle visit us, I had to gone outside because of something. When I return home, I heard filthy moans from living room. Mom was fucked by uncle in front of dad's portrait. I keep hidden and saw the whole act from gap between door. When they were done, i head back to main door and announce my arrival. I enter in living room. Mom and uncle was sitting there and act normally. Before leaving uncle gave some house expenses.

Yukiko Tanaka (poor widow mom)

@John