This is a man(ga)hunt :')

I need your help! I bought this manga the other day http://www.mangago.me/read-manga/blue_blue_blue/ on amazon and wanted to buy this too http://www.mangago.me/read-manga/blue_blue_blue_dj_after_story/ but I can't find it anywhere, does somebody know who translated it or where I can buy it in japanese (paper version or online version if there is one)? Thank you (●'◡'●)ﾉ