I tried to empathize with the main characters, but I failed. They're just too much of a stereotype - the villain/hero with a tragic past who faces his destiny with stoicism, and the spoilt girl who also has a tragic past and doesn't know how to deal with it (or simply doesn't want to). They have both been through a lot. Seriously, A LOT. Too many tragedy to keep this story plausible. It just feels overly dramatic, and I couldn't relate to it.
Do you know ho saved the day? Inoue. The innocent, genuine, kind, truly good-tempered guardian. He's really trying to help Yuu (and Juri too) with no other reason but to be kind to the others. I really liked him and his personality.

As for the art, the chara design is very good, but sometimes it feels like the characters are just doing the same facial expressions over and over again.