Here are the weekly manga & light novels rankings for March 12th - 18th.

Ranks/ This week's sales by copies/ Cumulative sales/ Titles
Manga
*1, 212,169 *,212,169 Chihayafuru vol.16
*2, 112,082 *,112,082 Tonari no Kaibutsukun vol.9
*3, *92,618 *,*92,618 Kuragehime vol.9
*4, *91,348 *,*91,348 Ace of Diamond vol.30
*5, *72,882 *,*72,882 Air Gear vol.35
*6, *71,187 *,*71,187 Shura no Mon: Dai Ni Mon vol.5
*7, *64,021 *,348,067 One Piece Blue Deep Characters World
*8, *63,395 *,*63,395 Kami nomi zo Shiru Sekai vol.16
*9, *59,862 *,*59,862 History's Strongest Disciple Kenichi vol.46
10, *57,833 *,*57,833 Hiyokoi vol.7

11, *56,699 *,101,742 Amanchu! vol.4
12, *54,702 *,528,786 Bleach vol.54
13, *51,224 *,*51,224 Area no Kishi vol.30
14, *49,214 *,442,498 Bakuman vol.17
15, *43,612 *,*86,490 Yume no Shizuku Kin no Kago vol.2
16, *42,534 *,*42,534 Stardust Wink vol.8
17, *37,036 *,*37,036 Kimi no Iru Machi vol.17
18, *36,534 *,*36,534 Good Morning Kiss vol.9
19, *35,791 *,325,444 To LOVE-Ru Darkness vol.4
20, *34,898 *,*34,898 Ryuuroden: Chuugen Ryouranhen vol.10

21, *34,084 *,*97,973 Usagi Drop: Bangaihen vol.1
22, *32,747 2,972,948 One Piece vol.65
23, *30,888 *,205,923 Beelzebub vol.15
24, *29,973 *,305,023 Kyou, Koi wo Hajimemasu vol.14
25, *29,934 *,367,182 Glass Mask vol.48
26, *29,674 *,209,214 SKET Dance vol.23
27, *29,042 *,*29,042 Eden no Ori vol.16
28, *28,371 *,*28,371 Ahiru no Sora Best Selection+
29, *28,189 *,*28,189 Gekkou Jourei vol.17
30, *27,250 *,*68,324 Chugoku Yome Nikki vol.2

Light Novels
*1, 77,018 143,001 Toaru Majutsu no Index: New Testament vol.4
*2, 26,409 *73,338 Bokura ga Ita
*3, 21,952 619,918 Biblia Koshoten no Jikentecho vol.1
*4, 21,021 *21,021 Oda Nobuna no Yabou vol.8
*5, 20,418 *20,418 Full Metal Panic! Another vol.3
*6, 19,309 *19,309 Date a Live vol.4
*7, 17,048 420,285 Biblia Koshoten no Jikentecho vol.2
*8, 16,880 *34,771 Golden Time vol.4
*9, 13,246 *13,246 Yahari Ore no Seishun Love Comedy wa Machigatteiru. vol.4 Special Edition
10, 13,058 *27,628 Ladies versus Butlers! vol.13
11, *9,630 **9,630 No-rin vol.3
12, *8,909 **8,909 Trigger Happy
13, *8,890 **8,890 Yahari Ore no Seishun Love Comedy wa Machigatteiru. vol.4 Standard Edition
14, *8,537 *18,281 Goshujin-sama wa Yamaneko Hime vol.9

Source: Oricon Youtaiju