Futanari Λεσβίες αδελφές Remake Edition.

Azusa', a young lady with a deep-rooted interest in the world. She discovered at an orphanage that she had a twin sister who had been separated from her. Her name is Nanaka, and like Azusa, she is a beautiful girl with a penis between her legs. Thus, the two meet and a dazzling period of perversion begins...