孤独の果て (Kodoku no Hate)

Kodoku no Hate is a song composed by Hikari Shuuyou and sung by Kagamine Rin; illustration and video by NEGI. It's both Hikari Shuuyou and NEGI's most notable works reached over 700,000 views and featured the games Project Diva Arcade and Project Diva Extend.
 * Nicovideo broadcast
 * Youtube broadcast

Background
The song was first uploaded on August 9th 2009, and is one of Hikari Shuuyou's and NEGI's biggest hits. It ranked first for four consecutive weeks in the Vocaloid weekly ranking. Later on the song was featured in the game Project Diva Arcade, and also Project Diva Extend.

It tells how Rin goes through many things; from sins to even regrets. She could see the "mirage" of her past, with her "friends" and how she somehow was forgotten and just disappeared in a flash.