SEPHID -The Next Arcady---Sound: SEPHID( https://twitter.com/sephidvariable )BGA: Observer.( https://twitter.com/OblivionMGD )---BMS Link( http://manbow.nothing.sh/event/event.cgi?action=More_def&num=393&event=133 )
http://www.nicovideo.jp/watch/sm37869566