Talk:Naze Hito wa Arasoun Darou? / Summer Wind / Jinsei wa STEP!/@comment-26216389-20160428133859/@comment-131168-20160503100730

I don't think we need to come up with much of a theory. Not every single can be the highest selling, and a difference in first week numbers of 15% isn't that huge. Their singles' first weeks for the past two years Really it's Arigatou ~Mugen no Yell~ / Arashi wo Okosunda Exciting Fight! that's the outlier, in a positive way.
 * 62K
 * 56K
 * 60K
 * 61K
 * 70K
 * 60K