When I read the other reviews for Copellion, I thought this might be bad, but it was actually the opposite.
Story is great, I can't give any other info on that. Too important to spoil.
Art was amazing, but the fact that the characters kinda stand out in comparison to the scenery was a bit of an issue that kept catching my attention.
Sound was wonderful, and the SFX was nice.
Characters were nice, wish they could've elaborated more on the girl's backstories, but I'm content.
Enjoyed this enough to give it a 9, don't let the other reviews discourage you.
Overall, a definite 10.