[SFM] After Midnight - new SFM futanari work by new author Captain Ameba. Hentai is released in 2020.

One summer, my own aunt invited me to spend time with her and my cousin at their home. She was incredibly happy to see me after a very long time. During this time, I grew stronger and matured, and she became even more beautiful and sexy. We had a little chat with them and I went to bed. However, the need of the night woke me up and I decided to immediately take a leak. On the way, I caught my cousin masturbating and to my surprise, I found her male sexual organ. That's how I found out their family's secret...