Alternative title:
Boogiepop Never Laughs
Boogiepop wa Warawanai (Japanese)
ブギーポップは笑わない (Japanese)
Genres: horror, psychological, supernatural
Age rating: Mature (May contain sex, drugs, and extreme graphic violence)
Plot Summary: A light in the sky, followed by a strange aura and grisly murders. Each character tells there own connection to the event and to a similar murder spree 5 years ago. All of the different stories are slowly tied together by seemingly minute similarities and the story of Boogiepop is unraveled.
Article from ANN

Episode 01
Episode 02
Episode 03
Episode 04
Episode 05
Episode 06
Episode 07
Episode 08
Episode 09
Episode 10
Episode 11
Episode 12