In the world of manga. A lot of those series have explicit nude centerfolds or extreme violence. This series is PG. Of course it has violence, but no extreme depictions of decapitation and such. And to my relief it has no nude drawings so skimpy dressed bumptious women.
If you per-adolescent is asking you for Naruto (nude drawings and extreme violence) buy him this series instead. This series is recommended by Wilson's Junior High School 01/09/10. This is a company that reviews all books out there for public and school libraries. To receive such recommendation means that this series is worthy of your child's eyes.