Karen is love and Sorata is win ♥

I do like Kotori, but I actually think the manga starts kicking after her death ^_^ sloooooow starting manga.

And for that matter, how did Kamui survive getting stabbed with so much glass?
Magical powers of Kamui-ness.

I'm pretty certain they never finished X due to problems with their publisher - who wanted them to tone down the gore and angst - not because they got lazy or didn't want to.