Wow! S/mileage has been getting a lot of promotion! I've been wondering why but then I just thought that maybe it's in hopes that they can fill up their budokan seats! That makes sense.
Because of the start of the golden week the new releases were available in stores one day early. But the pre-orders and the pre-release day event sales have not yet been counted by Oricon. So don't worry that this first day result is this low, it will be compensated over the next couple of days.