Spooky E is a synthetic human and agent of the Towa Organization, along with Aya Orihata, sent to investigate Echoes' pillar of light, who later targeted Boogiepop.

There is an urban legend that children tell one another about a shinigami that can release people from the pain they may be suffering. This "Angel of Death" has a name—Boogiepop. And the legends are true. Boogiepop is real.
 
(Source: Seven Seas Entertainment)

Five years ago, a string of grisly murders shook the city to its core and now the rumors have begun once more. Boogiepop... Everyone knows about Boogiepop: meet her one dark night and you are taken. People tell each other the stories and laugh: no one believes that she can possibly exist in this day and age. Still, strange things appear to be going on and the darkness is taking on many forms. Something is out there. Are you safe? 
(Source: RightStuf)

Sometimes it snows in April… 
 
Have you ever felt that there was something missing inside of you? Have you ever been envious of what other people have? Have you ever wished for someone that could make you whole? You need not worry any longer. Your time is near. A new possibility is dawning–a time that will end all suffering. 
 
From the mind of Kohei Kadono comes the thrilling second novel in the mind-bending Boogiepop series–Boogiepop Returns: VS Imaginator Part 1. Witness the first appearances of the mysterious Towa Organization–a major player in the Boogiepop Phantom anime series–as Boogiepop finds himself hunted by the synthetic human known only as “Spooky E”. All the while, a deadly entity is out to remake humanity in its image, one mind at a time. Can you escape from the clutches of the Imaginator…? 
 
(Source: Seven Seas Entertainment)

Witness the first appearances of the mysterious Towa Organization - a player in the Boogiepop Phantom anime series - as Boogiepop finds himself hunted by the synthetic human known only as "Spooky E." All the while, the deadly "Imaginator" is out to change the world one mind at a time. Can you escape from the clutches of the Imaginator...?


Six boys and girls with psychic powers. A tentative alliance from which friendships emerge. But when Boogiepop and a mysterious little girl start showing up in their visions of the future, the six friends find themselves caught up in a chain of events that could put the entire world at risk. With both their lives and their newfound bonds on the line, can they protect each other–and the secrets they’re still keeping? 
 
(Source: Seven Seas Entertainment)