DESCRIPTION:
「Pierrot」 - KEI feat. Hatsune Miku: http://www.nicovideo.jp/watch/sm11224129

On May 25, 2012, Senka announced he would be ceasing all activity under that name on Nico Nico and would start under a new name, however, would no longer be doing Utattemita videos. He will, however, create a compilation CD of his works.
The announcement was made concurrently on his community page by RAHWIA.

This video does not exist on NND anymore.

Community profile: http://com.nicovideo.jp/community/co386281