(second place sold 20085 copies)
See the whole top 20 here: http://www.oricon.co.jp/rank/js/d/
It's their 5th single to reach 1st place.
EDIT: Thanks to maclou for informing me that you're supposed to multiply the sales by 1.75 so the right amount of copies sold should be 86.490. YAY! .D