∞ -InfinitY- (Series)

-Infinity- (∞ ) is a series by Story Researcher (doujin group formed by cosMo and GAiA). All the songs in this series were released on three seperate albums: This series ended with: "Let's Play with Hatsune Miku!!!"
 * ∞-InfinitY-
 * InfiniteHOLiC
 * Hatsune Miku no Shoushitsu (CD)

Background
This series is connect to The Fantastic Garden & Star Girl and The Illusion Paradiseseries.

Vocaloid Hatsune Miku, was bought and installed by "Master", who she cared for deeply. However, over time she begins to wonder about the reason she was born, much to the opposition of her other Miku's (shadows). Thus beginning an inner journey that will ultimately end with the destruction of her own self...

Trivia

 * There are some songs that connect their ends to the beginning of the next song. You can listen to them here: http://picosong.com/qdeQ
 * CosMo made a novel about the series titled "The Disappearance of Hatsune Miku"
 * In each series there is at least one character with the blueish-violet hair color.