I would not recommend this anime at all. There was barely any character development, the plot consisted of... well, killing, and the whole manga was stretched to the max (they obviously wanted to sell their product for a longer period of time).

Here's a little checklist:

- Plot twists can not make up for a lack of plot, character development
- Cliffhangers are pathetic suspense - builders
- Not all readers are unable to see the Saw II parallels (a horrible sequel, by the way)

Thoroughly disappointed,

Cries