And irregardless of the relative ages and maturity of the members, who says that bubblegum pop is childish? We Can Make It, probably Arashi's most recent bubblegum-poppish single, came out in 2007, when their youngest member was almost 24 and their oldest member was 26. Not everyone has to like it, but just because it's not to your taste doesn't make it an objectively worse song. The fact that people are defending the Magic Power single because of the B-sides or saying it would have been all right if it was a double A-side with Beat Line makes me so angry, because yeah, Beat Line is a good song, but just because it's of a different genre from Magic Power doesn't make it an inherently "better" song. When it comes down to it, they're both popular boybandy songs. It's not like were comparing the Backstreet Boys and Mozart, here.
And yes, Magic Power was the theme song for Smurfs. Yes, it's appropriate to have an upbeat happy song for a humourous family movie. But in the end, I don't feel the need to defend the single with the movie. Hey! Say! JUMP should be allowed to put out a cute, upbeat single with a cute, upbeat PV without being baselessly criticized for it.