Helck is so ridiculously good. An interesting and twisting story, really good characters, and witty comedic moments mixed in with the tragic and dramatic in just the right measure. I think what I love the most is that I really have no idea where it will go next. Even the flashbacks leave me on the edge of my seat, since what happened in the past is a mystery until Helck tells the story of why he has betrayed humanity to join the demons.
Also, it has my Vamirio.