minaeshi,
You mention that HKT has a huge decrease, but really, where? First week sales of all three HKT singles: 250,147 -> 268,897 -> 277,000.
Anyways, SKE48's single still on #1, with 6,995 copies sold. Total of 377,748 so far.
BanzaiV Emerald Oki Kataomoi Aishite Kiss Choco Utsukushii Sansei Mirai?
11/03/09 11/07/27 11/11/09 12/01/25 12/05/16 12/09/19 13/01/30 13/07/17 13/11/20 14/03/19
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
火 163,208 264,492 283,011 285,467 *98,952 387,702 380,752 416,341 349,835 273,740
水 *15,934 *47,709 *45,672 *72,185 288,164 *67,883 *76,421 *49,546 *57,595 *88,431
木 *10,783 *17,827 *15,410 *16,689 *39,124 *17,781 *21,358 *14,861 *10,938 **8,582
金 **8,195 *13,770 *10,691 *96,240 *13,420 **9,353 *10,982 *10,346 *11,022 **6,995
土 **3,571 *13,885 **8,527 *11,570 *10,914 **7,955 **9,276 **6,042 **7,385 ***,***
日 **2,952 **8,309 **7,411 **9,922 **7,903 **4,867 *24,848 **6,498 **6,853 ***,***
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
計 204,643 365,992 370,722 492,073 458,477 495,541 523,637 503,634 443,628 377,748
週 206,608 378,747 382,802 495,809 472,327 511,472 538,914 510,673 449,003 ***,***
累 275,189 480,916 474,970 592,947 581,874 598,011 671,623 661,557 563,893 ***,***