How to become a futanari

Ren will transform into a futanari after accepting to be part of an experiment where volunteers receive money to take a new drug, which promises surprising results. Although he doesn't know what it is about, this guy accepts at once. The laboratory where this experiment will take place is at the university where he studies and there the boy meets Riko, a crazy and hot scientist, who will turn him into a futanari ready to satisfy the wishes of another volunteer.