This director should get some kind of medal; like the Nobel Peace Prize. Recognition of service to humanity through the medium of PVs where our dorky Arashi boys are mecha genki and have rainbows shooting out their asses. Because seriously, world peace HAS to be imminent after this.
Yes, I want to be the first to declare this is my FAVORITE Arashi PV ever. It has everything- rainbows, cute dancing, completely-over-the-top 70's hippie-love-style graphics-- and best of all, the boys being 100% themselves. I love the mixed elements of fantasy and reality, like when they step away from the green screen but still end up interacting with their alternate Arashi CareBear dimension. It's purely whimsical, but at the same time, manages to poke fun at the ridiculousness of it all.
Okay, I should stop analyzing the reasons why it's so amazing and just go watch it a dozen more times. :D