Here are the links to G-Collections new games on the Japanese Web Sites.
Sensei 2
http://www.do-game.co.jp/release/soft/sensei2/index.htm
Tsuki
http://www.zyx-game.co.jp/newsoft/tuki/index.html
Kango Shicyauzo 2
http://trb.cd-bros.co.jp/soft/kango02/index.htm
Haven’t found a link to the last game on the list on the D.O., Trabulance, Zyx, or Angel Smile Web Sites. My Japanese isn’t great so they might be in there but I missed it.