Death Note

Light Yagami is an ace student with great prospects - and he's bored out of his mind. But all that changes when he finds the Death Note, a notebook dropped by a rogue Shinigami death god.Any human whose name is written in the notebook dies, and now Light has vowed to use the power of the Death Note to rid the world of evil. ut when criminals begin dropping dead, the authorities send the legendary detective L to track down the killer. With L hot on his heels, will Light lose sight of his noble goal... or his life?

A very sadistic anime. It's like they are just playing with death. It is also an anime that would really let you think hard about it's plot. The game between L and Light would really make your mind turn upside down. This is an anime where the main character is the evil one and the antagonist the good guy.