[Reducing Mosaic]RTP-103 I caught my sister masturbating intensely with a dildo. 'I can't hold back anymore! I want to have sex!' she said, all worked up. Then, at her insistence, she used my penis as a substitute for the dildo...

Film Introduction

My sister, who doesn't notice me peeping while she's engrossed in masturbation. Even though she's a virgin, she's deeply taking in an extra-thick dildo and moaning with pleasure. Excited by the sight, I pounce on her from behind! I thought she would reject me, but seeing a real cock for the first time, her eyes sparkled, and she straddled me saying, 'I want to try it...'