YMDD-405

Synopsis: At first it was just a little whim. I took a peek at my niece Kana, who often comes over to play, and her friend Konatsu with a hidden camera... I saw a parade of outrageous infidelity, including lesbian play, horny masturbation, and sex with her boyfriend! What's more, I was caught masturbating on camera, so I was punished with a 3P! The whole story of how I was thoroughly taught by the precocious techniques of these bratty girls.