That's just mean. Making furry visual novels is hard, especially if you're a solo dev like LeiNavI. You have the audacity to comment this even if the game is for free and paying/donating is completely optional.
I do believe that my VN isn't one of the best ones out there and I know that you are entitled to give your opinion, but please don't spread incorrect information about the VN requiring mandatory payment. It's free to download and donations are voluntary (and really appreciated, of course).