Darren Shan manga

From Aku Tenshi: Darren Shan's an ordinary schoolboy, until he and his best friend Steve get tickets to the Cirque Du Freak, a bizarre freak show featuring such arcane performers. In the midst of the ghoulish excitement, true terror raises its head when Steve recognises that one of the performers -- Mr Crepsley -- is in fact a vampire! That's when the hands of fate changes the lives of them forever! Based on the english novel series Cirque Du Freak by author Darren Shan