Here is the weekly manga sales ranking for September 7th - 13th.

*1, 366,160 1,487,845 One Piece vol.55
*2, 355,500 *,355,500 Kimi ni Todoke vol.9
*3, 154,506 *,324,522 Ouran High School Host Club vol.15
*4, 130,932 *,334,682 Gintama vol.30
*5, 128,792 *,128,792 Worst Gaiden
*6, 104,924 *,393,149 Vagabond vol.31
*7, *66,322 *,152,293 Kaichou wa Maid-sama! vol.8
*8, *61,089 *,*61,089 Chihayafuru vol.6
*9, *59,099 *,*59,099 7Seeds vol.16
10, *48,183 *,374,773 Glass Mask vol.44

11, *41,584 *,109,656 Beelzebub vol.2
12, *37,368 *,*37,368 Yamato Nadeshiko Shichi Henge vol.24
13, *31,469 *,*74,889 Kuroko no Basket vol.3
14, *31,287 *,*31,287 Elemental Gelade vol.17
15, *30,283 *,*30,283 Clover vol.12
16, *29,336 *,*29,336 Tonari no 801-chan vol.4 Limited Edition with OVA
17, *28,589 *,*28,589 We are the WORST! vol.2 Character Book
18, *28,548 *,*28,548 Harumichi vol.1
19, *28,047 *,*66,311 Kochira Katsushika-ku Kamearikouen-mae Hashutsujo vol.166
20, *27,950 1,095,343 Nodame Cantabile vol.22

21, *25,235 *,138,182 Kyou no Nekomura-san vol.4
22, *25,096 *,*61,440 Toshokan Sensou: Love & War vol.4
23, *23,119 *,552,275 Detective Conan vol.65
24, *22,800 *,*44,404 Kenka Shoubai vol.17
25, *21,937 *,*21,937 Maken-Ki! vol.3
26, *21,144 1,197,832 Fullmetal Alchemist vol.23
27, *20,922 1,872,375 One Piece vol.54
28, *20,658 *,*20,658 Examurai Sengoku vol.1
29, *19,122 *,*19,122 Nyoro-n Churuya-san Limited Edition with a figure
30, *19,053 *,219,642 Mei-chan no Shitsuji vol.10

The last week's ranking: Japan's Weekly Manga Ranking For Aug 31 - Sep 6
Source: Oricon comic ranking

Weekly Light Novel Ranking for Sep 7 - 13
*1, 62,650 *62,650 Shakugan no Shana vol.19
*2, 30,330 *30,330 Ladies versus Butlers! vol.9
*3, 17,935 *17,035 Usotsuki Mi-kun to Kowareta Ma-chan vol.8
*4, 17,051 *17,051 9S vol.10
*5, 16,365 129,285 Summer Wars
*6, 15,188 *15,188 Shiritsu! Sanjuusangendo Gakuin vol.9
*7, 13,840 *13,840 Okami-san to Spin-off
*8, 12,130 *12,130 Kimi ni Todoke ~Asu ni Nareba~
*9, *9,771 *76,680 Kemono no Souja vol.1 Small Size Edition
10, *8,688 *72,147 Uchi no 3 Shimai vol.10

Source: Oricon Novel Ranking