User blog comment:JD4SURVIVOR/Original Just Dance Wii Japan - ISO/@comment-25582116-20160725132709

Nevermind, looks like I found the first one's iso (Just Dance Wii's): http://games.kmediawire.com/2015/07/wii-just-dance-wii-ジャストダンス-ウィー-jpn-iso-download-3.html

Again, I don't know if the page is reliable or not, I just found it, lol.