Original video link: https://www.nicovideo.jp/watch/sm17405972
Author: kazu
Author's mylist: https://www.nicovideo.jp/mylist/29681767
Original upload date: 03/30/2012 22:00
Original Title: 【MIDI】アイドルマスター「relations」【再up】 (I deleted 【再up】 because that means reupload.)
I do not own this song or video.