AKB48's latest single "Heavy Rotation" has sold 527k in one week. For female artists they are only the third ones to have two consecutive singles sell 500k+ in one week. Ayumi Hamasaki and Utada Hikaru are the only other two female artists to accomplish this. For female groups AKB48 is the first.
On the album chart B'z singer Inaba Koshi achieved the number 1 album for the week selling 127k.