In the commercials for Densetsu no Stafy 3 was the only song played in a Starfy series commercial that is n't related to the series .
No Stafy 3 is perfume 's song titled Vitamin Drop .
In the commercials for Densetsu no Stafy 3 , Perfume 's song titled Vitamin Drop , was the only song played in a Starfy series commercial that is n't related to the series .