Chaos Head, as it's title sugests, may seem a little confusing at the start. The story centres around Takumi Nishijo, 2nd year high school student, living alone in his container style home, atop a building in the Shibuya district of Tokyo. He is a loner, who prefers online gaming, anime girls, and magazines, to the real world.
One night he is sent an e-mail from someone calling themselves "The General," with an attached photo of a gruesome murder scene, an event in what is being called the "New Gen Madness." This is the start of his decline into paranoia, and delusion.
I found this to be an entertaining, and engrossing anime. Maybe a little heavy on the still frame shots, which any fan will know are used in varying degrees by all anime, but made up for by the story-line, and the twists in the plot. Some of the computer conversations I found a little hard to follow without pausing, but that maybe because I watch in Japanese with subs, or just that i'm slow :) Devoid of fanservice, which is a refreshing change. Though some cuteness is present amongst the six main female characters, particularly the slightly "moe" Yua Kusunoki. With really good begining, and ending songs, if the price is right this is well worth watching.