I received an ARC copy of this book in exchange for a review by the author on twitter.

So when I picked this book up I knew nothing about it, except that there would be transgender polyamory and mecha lesbians. Since I like transgenderism, polyamory, lesbians and mecha, this was incredibly appealing and in these aspects this book delivered wonderfully, so if you enjoy these things as well, I can just say check out the book immediately and enjoy!
But of course that's not all this book is. It is a space opera, a book following an intergalactic revolution, fighting back against oppressive regimes, being true to yourself and it also includes cat and wolf girl body mods (and lots of hot transgender lesbian sex!). The POV is mostly split between four characters, the first two POVs following the MC's mothers on their quest to become mothers and also fight cool mecha space battles (and have really hot transgender sex, including a mecha penis attachment that can feel everything, which was! Fun!) and the last two POVs making up the majority of the book as it follows Dia, a young mecha pilot who's planning on bringing down an empire and Gráinne, a princess, fighting for her freedom while her father wants to arrange a marriage for her that she definitely does not want. I remember being a bit confused when the time skip happened between the first two POVs and the latter two POVs and in general, while I enjoyed the first POV a lot (there was very hot transgender sex and cool mecha fights! in space! so good!) I struggled with finding my bearing again after the POV switch happened. Once I got into the main story however, I was intruiged by that one and found myself really enjoying it, from the interpersonal drama of Gráinne and her family issues, to the bigger picture drama of an oppressive regime that needs to be destroyed and how to achieve that. And of course, I do need to stress that, because it was a really good part of the story, the hot transgender lesbian sex in here. I also liked the aspects of body euphoria expressed through body modification and mechas and that we had multiple trans female characters both with and without bottom surgery, enjoying penetrative sex in multiple directions and with a variety of toys, which was something I liked quite a lot.
In the second part of the book we also get to see the formation of a throuple and while there are some aspects of insta love with the third character that I think could have been explored in more detail, I still enjoyed it quite a lot. I absolutely could understand the story moving fast and I was even able to suspend my disbelief enough to understand the quick progression of Dia's and Gráinne's relationship and feelings for each other due to their circumstances, the believability of the poly romance as not just insta-love suffered from being included later and not explored in detail and I found there to be so many aspect that I just wish had been explored a bit more. I also wish there had been at least a small scene where Dia and Gráinne at least discuss wether or not their circumstances influenced their feelings for each other and reaffirm their feelings for each other as real despite this, because I think it could have added to the romance aspect a lot and made the relationship feel more real despite the very hurried development.
I also wish the main incenting action which took place in the first POV would have played a bigger part in the second POV instead of being shuffled towards the next book, because that just made the first POV feel more disconnected to the main part of this book and so I think this book could have benefitted from having the first few chapters on the space station as its own seperate novella/in another sequel/prequel book only hinted at in this one and instead allow more time for the development of the relationships in the second POV.
I also have to say that the animal body mods came as a complete surprise to me. Not a bad one, but I wish it would have been hinted at a bit earlier, because like this they just confused me (at some point I remember Dia mentions having fangs and bithing Gráinne with them, drawing blood, and I was honestly expecting space vampire mecha lesbians at that point. Wolf girls are fun too though!). And literally every single character is a lesbian. I don't mind that (as a lesbian myself who only has queer friends it'd be a weird thing to judge), but I do think having side characters (at least the ones that aren't villains) that aren't also all women and all lesbians and all in couples would have made the world seem a bit more diverse and well rounded, because like this I was just sitting here, noticing a female character got introduced and counting down to the point where they reveal they too have a girlfriend. It just made everything a little bit too predictable. If you like your mecha romance with slightly unrealistic amounts of lesbians though, this will probably be a perk to you and I hope you enjoy it!
Despite my issues I quite enjoyed this story and found myself intruiged by mostly everything that was going on and I'm excited to check out the sequel as well!