Original video (Mar 31):
http://www.nicovideo.jp/watch/sm23219202
Dancer:
Ayapiyo【あやぴよ】http://www.nicovideo.jp/mylist/32754264
Choreography:
Pinopi【ぴのぴ】http://www.nicovideo.jp/mylist/19780262
http://www.nicovideo.jp/watch/sm22885779
Song:
Koizora Youhou/恋空予報 - koyori feat. GUMI
http://www.nicovideo.jp/watch/sm20574984
This version by Nayugorou/なゆごろう
http://www.nicovideo.jp/watch/sm20972863