Willer Express (Shinjuku to Shuzenji)
http://travel.willer.co.jp/st/3/ja/pc/bus/route/calendar.php?oR=1804816&fR=2804816&sk=22&tk=13
Tokai Bus dicounts
This page is just awesome with so much information. Please check below for information.
http://www.tokaibus.jp/file.jsp?id=8818