Hmm...I don't know, it didn't feel rushed to me. The previous chapter definitely felt like the penultimate one, leading up to the climax and resolution. Maybe I'll feel differently when I read the series all together as a whole, though.
Also, I was NOT expecting the polyamory ending. Holy balls. What's more, I think it actually works really well for these characters, even though I often find that polyamory is very difficult to make work well in a story.
Overall, this was a solid read. The highlights are the absolutely gorgeous art and largely unconventional plot, plus a fantastic main character.