The ending was fairly sad. I ship Momoki and Kiki 100%. I thought when he said you can run away to somewhere secluded that he meant that they would run off together. I'm not into fan-fiction but that would be an interesting story to read!
I am giving my final rating of this anime a 7/10. Would I recommend this anime? Sort of. If you are into mystery and psychological style anime I would tell you to watch this. If you aren't so much into it, I'd stray away. You'll find yourself bored.