Yaaay...B'z is at #3 today on Oricon daily. Even with all the new releases they still manage to be in the top, but that.s not saying much though as the competitions doesn.t seem to be very strong. Anyway, their sells have been really steady, around 6000 for the past few days...mmmm is Beat Buzzer really that popular?
As for being the best selling group in Japan, I highly doubt any band/singer can beat B.z in the future. Unless Oricon start including legal downloading as part of physical sells, which I also highly doubt.