That is a DLC version and you need a original version game.
http://www.dlsite.com/maniax/work/=/product_id/RJ123862.html
You can also download torrent in this thread...
Original title: 春眠乱舞(Shunmin Ranbu)
Circle:スチールマニア(Steel Mania)
Release: 2014年06月26日
Japanese DLsite: http://www.dlsite.com/maniax/work/=/product_id/RJ136557.html/?unique_op=af
English DLsite: http://www.dlsite.com/ecchi-eng/work/=/product_id/RE136557.html