This explanation pretty much sums it up: “Deep in the forest lived Billy and his charming companions. They peacefully honed their bodies and listened to music there. But a wave of development came upon the forests. One who would turn all to road. Kagamine Rin had come. Billy must stop the construction before all is turned to road.” The game is “Ultimate Muscle Roller Legend” and you can watch here but really should click through to enjoy some of the comments people have posted on Youtube. More great games from the Japanese here. -Via Cartoon Brew