Metamorcode

Sinopsis

Mysterious deaths occur where victims are inexplicably dismembered. The situation escalates when Homura Kei's computer class of 36 students is massacred. Kei survives because she skipped class. That night, a hacker named Yuon visits her, claiming to have also lost someone to the killer. Yuon reveals that a program, activated by a blue butterfly image on a computer screen, is being used to murder people. Kei and Yuon must find the murderer before they become the next targets.