"11 eyes" was a memorable show to me because of it's villains. I found the overall idea of their relationship rather romantic.

Beside that, it's a generic story of urban dark fantasy. It gets very dark in a few places. Avoid this if you are sensitive. The visual novel this anime is based on is even more dark. But the anime is better produced and written than the game anyway.

I struggle to recommend "11 eyes" to anyone in particular. If first few episodes didn't immediately hook the viewer, I suggest jumping off early.