Stared ok, mysteries and the unknown... then it turned into a boring, undeveloped and unattractive series with "forget me" characters, annoying character, useless characters... and don't even ask for the protagonist that looks more like a villain (yeah, the evil-smiling bastard in the cover) and acts like a douche.
Don't believe me?
Mushi = Bug
Uta = Shot
yeah... even the name is lazy, no ...