It's a romance/drama. It's something you have to read/watch all the way to understand correctly.
Now let me tell you this about myself. I may be emotional, but I rarely ever cry. Pain? It just hurts, it goes away, big whoop. D or an F? I feel like crap but I don't cry.
It always has to hit a nerve or be so emotional that I start crying.
I cried many times within this series (I downloaded and watched the entire anime series). It was sad, happy, sad again, even more sad, happy, etc.