Here are the top 20s of Japan's weekly manga sales rankings.

Sep 22nd - 28th
Rank/ This week sales/ Total sales/ Title & vol.
1, 156,210 1,218,894 NANA vol.20
2, 121,372 259,365 Tenjou Tenge vol.19
3, 115,057 300,673 Kuroshitsuji vol.5
4, *84,011 *84,011 Bamboo Blade vol.9
5, *80,391 *80,391 Juushin Enbu vol.3
6, *70,586 194,081 Cross Game vol.13
7, *63,824 219,589 Ahiru no Sora vol.21
8, *62,727 126,082 Liar Game vol.7
9, *58,535 208,007 Air Gear vol.22
10, *55,164 186,841 Hajime no Ippo vol.85

11, *53,658 1,517,953 One Piece vol.51
12, *51,408 *51,408 Isagiyoku Yawarakaku vol.8
13, *50,032 *50,032 Sumomomo momomo vol.11
14, *49,937 169,876 Ace of Diamond vol.12
15, *48,748 *48,748 Fushigi Yuugi: Genbu Kaiden vol.9
16, *42,767 *42,767 Koibana! Koiseyo Hanabivol.3
17, *39,938 *85,039 Hoshi wa Utau vol.3
18, *39,026 *39,026 Amatsuki vol.8
19, *38,966 *38,966 Crimson Hero vol.14
20, *34,844 *34,844 Kiss / Hug vol.3

Source: Oricon

Sep 29th - Oct 5th
Rank/ This week sales/ Total sales/ Title & vol
1, 487,403 487,403 Hunter x Hunter vol.26
2, 442,514 442,514 Bleach vol.35
3, *97,419 *97,419 To-LOVE-Ru vol.11
4, *95,435 *95,435 Vampire Knight vol.8
5, *74,708 1,293,602 NANA vol.20
6, *53,287 *53,287 Tegamibachi vol.5
7, *50,834 *99,582 Fushigi Yuugi: Genbu Kaiden vol.9
8, *46,211 *46,211 Nurarihyon no Mago vol.2
9, *45,414 *45,414 Majin Tantei Nougami Neuro vol.18
10, *45,371 *45,371 Rosario+Vampire II vol.2

11, *44,844 *44,844 Futari Ecchi vol.40
12, *44,597 345,270 Kuroshitsuji vol.5
13, *42,252 *42,252 Shiki vol.3
14, *40,793 *40,793 Bokurano vol.9
15, *38,656 122,667 Bamboo Blade vol.9
16, *38,164 *38,164 Harukanaru Toki no Naka de vol.15
17, *34,904 *39,904 Bartender vol.12
18, *33,068 *33,068 Jyoukyou Afro Tanaka vol.4
19, *32,741 1,550,694 One Piece vol.51
20, *31,849 291,214 Tenjou Tenge vol.19

Source: Oricon

Oct 6th - 12th
Rank/ This week sales/ Total sales/ Title & vol
1, 200,640 688,043 Hunter x Hunter vol.26
2, 174,973 174,973 WORST vol.21
3, 170,953 613,467 Bleach vol.35
4, *73,682 169,117 Vampire Knight vol.8
5, *68,979 *68,979 Baki -Son of Ogre vol.15
6, *61,609 159,028 To-LOVE-Ru vol.11
7, *61,217 *61,217 Souten no Ken vol.19
8, *49,784 *49,784 Shinjuku Swan vol.15
9, *44,154 1,337,756 NANA vol.20
10, *41,470 *94,757 Tegamibachi vol.5

11, *37,252 *51,598 Selected Pandemonium vol.17
12, *37,001 *37,001 Umimachi diary vol.2
13, *32,637 *78,008 Rosario+Vampire II vol.2
14, *32,637 *74,846 Shiki vol.3
15, *31,000 *65,904 Bartender vol.12
16, *30,225 *68,389 Harukanaru Toki no Naka de vol.15
17, *29,537 *74,941 Majin Tantei Nougami Neuro vol.18
18, *28,743 374,013 Kuroshitsuji vol.5
19, *24,365 *70,576 Nurarihyon no Mago vol.2
20, *24,079 *24,079 Seisei Suruhodo, Aishiteru vol.6

Source: Oricon

Oct 13th - 19th
Rank/ This week's sales/ Total sales/ Title & vol.
1, 152,617 152,617 Hayate The Combat Butler vol.17
2, 117,860 117,860 Fairy Tail vol.12
3, 105,514 105,514 Kekkaishi vol.22
4, *92,570 *92,570 Skip Beat vol.20
5, *81,399 *81,399 BECK vol.34
6, *81,047 *81,047 GANTZ vol.24
7, *75,347 *75,347 Inu Yasha vol.55
8, *69,227 757,270 Hunter x Hunter vol.26
9, *66,308 679,775 Bleach vol.35
10, *59,858 *59,858 Dear Boys ACT II vol.29

11, *58,618 *58,618 Good Morning Kiss vol.3
12, *47,082 222,055 WORST vol.21
13, *46,498 *46,498 Sayonara Zetsubou Sensei vol.15
14, *43,269 *80,270 Umimachi diary vol.2
15, *40,464 *40,464 Shanimuni GO vol.30
16, *39,166 100,383 Souten no Ken vol.19
17, *36,802 *36,802 The World God Only Knows vol.2
18, *36,779 *36,779 Kimi no Iru Machi vol.2
19, *32,617 *56,696 Seisei Suruhodo, Aishiteru vol.6
20, *31,749 *31,749 D.N. Angel vol.13

Note:
25, *26,749 *26,749 Sayonara Zetsubou Sensei vol.15 with OAD

Source: Oricon