OBA-339 The nephew who used to bathe with me has grown up without my noticing. Auntie's Bathroom Mikiya Yagi

Due to job hunting activities, my nephew Ken-chan is coming to stay for four days. Ken-chan, upon reuniting, was still the good boy he used to be. But then Ken-chan suggested we take a bath together like old times, so I ended up going in with just a towel wrapped around me. And when Ken-chan turned towards me, his penis was fully erect and adult-sized, and he inserted it into me. I knew it was wrong, but because I was sexually frustrated, I ended up enjoying it with my nephew's dick...