1st day sales of My Girl - #1 with 177,725 copies
http://www.oricon.co.jp/rank/js/d/
In comparison , Everything sold 135,053 in the 1st day . 
I will not compare Believe / Kumori Nochi Kaisei & Ashita no Kioku / Crazy Moon ~Kimi wa Muteki~ since these are double A-side singles of the guys .