I'm glad you enjoyed it!
That's a difficult question to answer. I myself am not transfeminine, so I think it would be disingenuous to say that is what it is about. However, this game is about myself and my life, and I think a lot of people find this game specifically speaks to them in a way I think is truthful to itself.
tldr I hardly even know what this game is about and I made the damn thing. It's a miracle it works at all.
Sorry for the annoying non-answer