Here are the weekly manga and light novels rankings for December 19th - 25th.

ranks/ this week's sales by copies/ cumulative sales/ titles
Manga
*1, 250,146 250,146 Thermae Romae vol.4
*2, 235,585 237,374 JoJo's Bizarre Adventure Part 8: Jojolion vol.1
*3, 156,584 352,990 Fairy Tail vol.30
*4, 140,821 248,584 Toaru Kagaku no Railgun vol.7
*5, 122,925 122,925 Ao Haru Ride vol.3
*6, 117,553 117,553 Uchuu Kyoudai vol.16
*7, *96,495 397,080 Detective Conan vol.74
*8, *99.172 175,902 Ace of Diamond vol.29
*9, *86,390 *86,390 Genshiken vol.11
10, *84,715 *84,715 Barakamon vol.5

11, *83,729 *83,729 Inu x Boku SS vol.6
12, *77,574 166,210 Hajime no Ippo vol.98
13, *72,888 154,459 Air Gear vol.34
14, *72,089 *72,089 Lucky ☆ Star vol.9
15, *68,586 *68,586 Jormungand vol.10
16, *67,129 *67,129 Boku wa Tomodachi ga Sukunai vol.4
17, *66,436 546,438 Shingeki no Kyojin vol.6
18, *65,232 150,525 Hayate no Gotoku! vol.31
19, *63,762 139,156 Shura no Mon: Dai Ni Mon vol.4
20, *61,108 *61,486 Usogui vol.23

21, *60,166 262,442 Gin no Saji vol.2
22, *56,945 249,393 Chihayafuru vol.15
23, *52,854 *52,854 Danshi Koukousei no Nichijou vol.5
24, *51,203 *51,203 Usotsuki Lily vol.6
25, *50,498 *50,870 Kinnikuman II Sei: Kyuukyoku no Chojin Tag Hen vol.23
26, *47,654 123,685 Kami nomi zo Shiru Sekai vol.15
27, *45,855 *79,912 Gunslinger Girl vol.14
28, *42,585 *42,585 Principle vol.3
29, *41,876 *41,876 Mobile Suit Gundam-san vol.8
30, *41,011 *41,011 Suzumiya Haruhi no Yuuutsu vol.15

Light Novels
*1, 140,323 140,323 Koimonogatari
*2, *65,302 *65,302 Hidan no Aria vol.11
*3, *49,830 *53,461 Full Metal Panic! Another vol.2
*4, *28,556 *29,878 Chrome Shelled Regios vol.19
*5, *26,031 *54,952 Jojo's Bizarre Adventure Over Heaven
*6, *24,823 284,809 Biblia Koshodo no Jikentecho vol.1
*7, *23,704 *23,704 Madan no Oh to Vanadis vol.3
*8, *23,495 198,238 Toaru Majutsu no Index: New Testament vol.3
*9, *23,146 *23,146 Banno Kanteishi Q no Suirigeki vol.1
10, *20,627 *20,627 Kikou Shoujo wa Kizutsukanai vol.7
11, *17,755 176,017 Biblia Koshodo no Jikentecho vol.2
12, *16,501 *16,501 Baka to Test to Shoukanjuu vol.10
13, *16,030 *16,030 Ben-To vol.8
14, *15,638 *15,964 Itsuka Tenma no Kuro Usagi vol.9
15, *14,911 *14,911 Campione! vol.11
16, *14,404 *14,840 RPG World vol.10
17, *12,336 *12,335 Kono Naka ni Hitori, Imouto ga Iru! vol.5.5
18, *12,211 *12,444 Fukanzen Shinkei Kikan Iris

Source: Oricon Youtaiju