ChäoS;HEAd: Blue Complex  

Head: Blue Complex, カオスヘッド Blue Complex

Takumi is a high school student who lives in a town where a mysterious serial murder case has occurred. despite being withdrawn and uninterested in 3d things, he becomes involved in the investigation when he receives an url from an unknown man through an internet chat. the website contains a blog image that predicts another murder case, which turns out to be true the next day. takumi is diagnosed with schizophrenia due to his intense delusions and secluded lifestyle as a hikkikomori. he stumbles upon a gruesome murder scene as part of the "new generation" chain of events and meets increasingly insane anime girls with swords.