The first ten minutes of this beautifully portrayed anime is a clear warning message for those with weak stomachs to find their entertainment somewhere else. Elfen Lied starts off with a cliché type of storyline: humans keep mutants locked up and experiment on them, mutants try to kill humans. However, after the first episode, I found myself captivated to go on. Even after (I think the eighth episode) where a puppy is mercilessly beaten to death, I kept being drawn in by the spiraling storyline, and found myself spending another thirty dollars on the final DVD. I have yet to watch it.
Those with weak stomachs better avoid this story in all. My sister at age thirteen (I'm fourteen) was absolutely terrified after watching the first episode. She had a good two weeks of nightmares, but continued watching. The storyline is addictive, so stay away unless you are prepared to watch every last second of gore, tears, and kisses.