Atarashii Arashi Wet Poster Trick
Kinda wondering this morning how they did this because the two pictures were so identical to each other.. But then I got my answer not long after when I got my hands on the ts version of the video.
So I have this theory that they shot that shot when the members were already wetting themselves (this sounds so wrong LOL)
Then they enhanced the wet effect for the raining version.
You can see the proof on Jun's left shoulder in the dry version. You can slightly see that part of the shirt was already wet, sticking to his shoulder (I want to be his shirt). Also slightly on Aiba's right shoulder..
I know, I know, I have nothing better to do XD
(Btw, they look so amazingly hot in this)