Gachinko Chara Song Tournament

The Gachinko Chara Song Tournament (ガチンコ・キャラソン・トーナメント) is a competition on the official website which pits the 16 songs from the SD flash anime episodes against each other to determine which will be used as the 4th main ending theme of the series. There are three rounds of voting, and the results are all a result of viewers' votes.