If you've ever read Lord of the Flies by William Golding, you may enjoy reading Eden no Ori. Also known as Cage of Eden, the manga has a storyline and characters roles similar to Lord of the Flies. The differences between the two are that the manga, being a manga, provides fanservice with its many high school female and male characters and sets the danger to the island to an all time high with deadly prehistoric lifeforms.
What I like most about Eden no Ori are the many mysteries that come with the island. Why are there prehistoric lifeforms? Did the characters travel back in time? If so, how and why did it happen? If they didn't travel back in time, was the island always there? Is it natural or was it man-made? Which characters will survive on the island and what role will they play later in the story?
I have plenty more questions regarding to the manga but they will have to wait until the scanlators or Kodansha USA finish with it.
Recommended audience: Teens
Author and Artist: Yamada Yoshinobu
Release year: 2008
Volumes: 13+ ongoing
Licensed by Kodansha USA