Well guys, don't make me laugh.
When there is a happy ending you call it like "I knew it would end up like this, I hate it", and when there is no happy ending you say it sucks and that you were expecting something like "and so they lived long and were always happy". Just wtf? Decide, which one do you prefer.
I like the ending, cause it is not stereotypical - it is something I didn't predict, but I must say that it confused me a bit.
What's more, I believe manga is better than the anime when it comes to drama and few other things. I loved Misaki from manga, she was much better than the one from anime. Furthermore, I'd say they are two different girls! And look at Nanako! The same! Completely different than the one in anime. Hmm.. what else... There are many dramatic scenes and they really moved me deeply,for example, check chapter 19 from page 22 to 31 <-- This is just too sad.
Especially one scene stayed long in my mind (I guess I will never forget it). It is chapter 26 page from 23 to 25 <-- this scene moved me so so deeply, that I became MEGA depressed. I have never been so sad in my life.
Will it sound funny if I say that I do not recommend you reading this manga, beacuse you will be sick of sadness? I guess it's the best thing I could advice you if you are happy right now.