This game does not have a reverse harem version; nor does it have a female protagonist, as that would take a lot of effort on the part of the developer and would be tantamount to making an entirely new game.
What you need to do is type in under the (Select a Tag) Transformation or Futa, or Transgender or Female Protagonists To find that type of games. And when you find a game you like you can then click onto players name in the comments section to see other games that player has committed on and click onto that games name to find more games. Hope this helps you to find your type of games. Futa’s World is a game you may like. Take Care