Here is the weekly manga sales ranking for January 18th - 24th

rank/ this week's number of copies sold/ total copies sold/ title & volume number
*1, 192,717 192,717 Tenjou Tenge vol.21
*2, 146,758 664,116 Kimi ni Todoke vol.10
*3. 134,435 374,390 Vagabond vol.32
*4, 129,346 292,799 Fairy Tail vol.19
*5, *97,604 153,829 Hayate The Combat Butler! vol.22
*6, *88,170 183,804 Ace of Diamond vol.19
*7, *79,145 *79,145 Yami no Matsuei vol.12
*8, *72,349 *72,439 Mobile Suit Gundam: The Origin vol.20
*9, *70,674 *70,674 Giant Killing vol.13
10, *61,261 *61,126 Hoshi wa, Subaru. vol.7

11, *57,104 110,619 Hayate The Combat Butler! vol.22 Limited Edition
12, *54,841 983,174 Naruto vol.49
13, *53,807 *92,266 The World God Only Knows vol.7
14, *49,199 *49,199 Moteki vol.3
15, *45,893 148,783 Sukitte Ii na yo vol.4
16, *44,916 *44,916 Love So Life vol.3
17, *41,972 *41,972 Nante Suteki ni Japanesque vol.9
18, *38,522 *38,522 Saikyo! Aoizaka High Yakyubu vol.23
19, *37,387 *37,387 Addicted to Curry vol.35
20, *36,359 *36,359 Kamisama Hajimemashita vol.5

21, *34,914 *34,914 Saiunkoku Monogatari vol.5
22, *34,545 *34,545 Magical Girl Lyrical Nanoha ViVid vol.1
23, *34,042 *77,923 Seitokai Yakuindomo vol.3
24, *26,068 397,590 Gintama vol.32
25, *25,943 *25,943 Hyougemono vol.10
26, *24,390 *24,390 Tony Takezaki Gundam Manga vol.3
27, *23,269 *23,269 Yankee-kun to Megane-chan vol.15
28, *22,536 *49,169 Godhand Teru vol.50
29, *22,427 *22,427 Deadman Wonderland vol.7
30, *22,369 296,604 New Prince of Tennis vol.2

Source: Oricon manga raking
Japan's Weekly Manga Ranking for Jan 11 - 17

Weekly Light Novel Ranking for Jan 18 - 24
*1, 38,945 *38,945 Zero no Tsukaima vol.18
*2, 22,592 *22,592 Dai Densetsu no Yusha no Densetsu vol.7
*3, 17,621 *17,621 Jinrui ha Suitai Shimashita vol.5
*4, 17,197 *17,197 Seiken no Blacksmith vol.8
*5, 15,075 *15,075 Shin Tenchi Muyo! Ryuohki Gaiden GXP vol.6
*6, 13,507 *13,507 Kore ha Zombi desuka? vol.4
*7, 13,415 *13,415 Kami sama no Inai Nichiyobi
*8, 13,219 *13,219 RPG World vol.4
*9, 10,921 *10,921 Sword World 2.0 Replay vol.7
10, 10,619 110,522 Baka to Test to Shoukanjuu vol.1
11, 10,333 *14,894 Sanzen Sekai no Karasu wo Koroshi
12, 10,032 123,289 Baka to Test to Shoukanjuu vol.7

Source: Oricon Novel Ranking

Manga Ended This Week
Kiyoku Yawaku: Jan 23rd
Ga-rei: Jan 26th
Mouryou no Hako: Jan 23rd

Sources: Natalie, Natalie, News2u