Creator of this video: 13
http://www.nicovideo.jp/mylist/29422493
This video was originally posted on NicoNicoDouga:
http://www.nicovideo.jp/watch/sm17244706
Dancers:
鷹文 (left) http://www.nicovideo.jp/mylist/22182884
13 (right) http://www.nicovideo.jp/mylist/29422493
Original song:
ハッピーシンセサイザ - EasyPop (BETTI) ft. 巡音ルカ & GUMI
http://www.nicovideo.jp/watch/sm12825985
http://www.youtube.com/watch?v=poiZSEjQBgw
This version sung by めろちん (he played keyboard too)
http://www.nicovideo.jp/watch/sm13071844
Choreography reference: めろちん
http://www.nicovideo.jp/watch/sm12926280
Photography: sukeb.
http://www.nicovideo.jp/user/1583189