Twisting Fate Amongst the Stars

Hrefna grew up like many who were descended from the settlers of Expeditionary Fleet Gullstjarna; taught how to hunt, to fight, and most importantly... how to survive.
Like many of her brothers and sisters, Hrefna eventually left her home world and joined with the Einherjar, the Gullstjarna Fleet's branch of Humanity's vast military; she rose through the ranks to become an accomplished sniper and expert mech pilot.
For years she served in the Vel Risi Company of the Einherjar, and now she finds herself on the most recent front against the nearly endless swarms of the Chukanid, a race of ravenous aliens that think of nothing besides feasting upon anything composed of biological components, but it is here that her fate begins to zip around the countless stars of the universe.

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This will be a book with action, romance, character development and an equal amount of goofiness to seriousness. Characters will be as dynamic as I can possibly make them (within reason, obviously) and the interactions will be a primary focus of this book.
The other will be the action, from close range gunfights to long ranged shootouts with normal guns, all the way to space battles fought with ships and mechs; aliens of all kind and of all sentient reasoning will fight with or against the protagonist, and I want to explore all sorts of things.
This will also be a FUTA FMC, meaning Hrefna... has a penis despite being a woman; if you don't like that, please don't read. This will also have both 'giving' and 'taking' on her part, and there will be smut within the story, ranging from the lewdness of handholding to the wildest things you can imagine in a sci-fi book.
The hope is roughly 500 chapters before reaching some kind of conclusion, with each chapter being 1-1.5k words in length; it will eventually go premium because... I need money, but I will leave the first ~50 chapters free to get people hooked and figure out if this is worth fastpasses or money.
I hope you all enjoy this, and go check out my other books by viewing my profile; everything I write is FUTA though, just as a heads up, so don't go looking for something else...