The circus arc is, so far, one of the funniest and most enjoyable. Vol. 6 is only the first part, and it feels heavier on humor and fun than the mystery, but that's mostly okay by me. I love the new characters, Sebastian and the tiger, seeing Ciel out of his element, and the surprise reappearance of a certain character. Not to mention watching Sebastian rule at circus acts, and Ciel's little outfit (SMILE)!