Dark humor + bloody visuals = not for young teens.
Parents need to know that the main character in this dark anime series is a serial killer who appears as a young, school-aged boy on inline skates; his weapon is a bent baseball bat. He strikes and kills, leaving victims dead in puddles of blood. But perhaps even more chilling, the show is a psychological study of inner human drama, observing how people suffer from despair and fear -- some real, some not. With its dark humor and plotlines and its mix of realty and fantasy, this anime is better suited for adults (and even those well-versed in this genre might have some trouble getting it).