Zanna Morso
I've seen all teh episodes and even the movie thats a pre-cursor to the anime! Its very good, though I wish the ending was a bit different...
I definitely agree with you. It made me sad but it couldn't end up happily every after. There were only three possible outcomes: 1) Diva kills Saya, Chiropterans take over 2) Diva and Saya kill each other. 3) Saya kills Diva. We all know that they couldn't live together peacefully because they didn't understand each other... I think the way it ended was the best solution for the main character out of the three.