Okay, I managed to finish it. I started reading this a year ago I think and it was really rough to get through some sections because the abuse was just so much, but I'm in a better place now than I was then and found it a bit easier to get through. It helped to know that there had to be a happy ending waiting.
So initially what drew me to this was the similarity to Utena, and while the relationships in that were always very ambiguous (as was the ending), this story was much more overt about the affections and relationships between characters. I think we can ultimately chalk that up to the difference in time between the stories, the 90's were always a bit hit or miss with queer romance in manga and anime. What a different 10+ years makes! As I kept reading however I started to see it for what it was, a message and a metaphor for the modern era, that times change and people with them. You don't have to go with the flow of society or respect traditions that actively degrade or hurt others. Middle and High school is shitty time for most people and more often then not we make it worse for people by taking our frustrations out on them, but once we start to see that we're all just a little broken we can move forward and mend together. Tsuki was a very broken and lonely character, but Sora loved her immediatley and without question. Once she saw just how far Sora was willing to go for her, once Sora's feelings reached her, she could start to mend too.
All in all I'm glad I read this and I'll definitely be picking up the official releases!