Here are the weekly manga & light novels rankings for May 2nd -8th.

ranks/ this week's sales by copies/ cumulative sales/ titles
Manga
*1, 1,788,455 2,367,582 One Piece vol.62
*2, *,299,528 *,300,284 Katekyo Hitman Reborn! vol.34
*3, *,229,717 *,230,560 Nurarihyon no Mago vol.16
*4, *,153,415 *,153,744 Beelzebub vol.11
*5, *,142,077 *,142,301 Kuroko no Basket vol.12
*6, *,104,529 *,104,800 Medaka Box vol.10
*7, *,*95,114 *,943,717 Naruto vol.55
*8, *,*65,786 *,376,965 Thermae Romae vol.3
*9, *,*65,067 *,*65,771 Chotto Edo Made vol.5
10, *,*58,439 *,614,822 Bleach vol.49

11, *,*57,016 *,*57,016 Highschool of the Dead vol.7
12, *,*45,628 *,113,457 Gaku Minna no Yama vol.14
13, *,*45,396 *,*45,612 Embalming ~ The Another Tale of Frankenstein vol.5
14, *,*43,004 *,*43,004 Mikado no Shihou vol.3
15, *,*40,464 *,107,762 Junjou Romantica vol.14
16, *,*34,593 *,597,916 Shingeki no Kyojin vol.4
17, *,*33,152 *,261,777 Giant Killing vol.19
18, *,*31,349 *,*31,349 Hokenshitsu no Shinigami vol.8
19, *,*29,822 3,102,769 One Piece vol.61
20, *,*29,348 *,*97,113 Ore no Imouto ga Konnani Kawaii Wake ga Nai vol.4

21, *,*29,158 *,*29,158 Mishounen Produce vol.4
22, *,*28,623 *,*28,802 Kekkai Sensen vol.3
23, *,*28,008 *,114,072 Black Bird vol.13
24, *,*27,917 *,367,948 Fairy Tail vol.26
25, *,*27,817 *,*74,018 Jisatsutou vol.5
26, *,*26,253 *,*94,926 Gunslinger Girl vol.13
27, *,*25,749 *,*26,105 Tenkuu Seiryuu - Innocent Dragon vol.9
28, *,*25,126 *,275,264 Ao no Exorcist vol.3
29, *,*25,032 *,*25,032 Yowamushi Pedal vol.17
30, *,*24,797 *,291,697 Gantz vol.31

Light Novels
*1, 44,191 *,*69,884 Katekyo Hitman Reborn! Hidden Bullet vol.5
*2, 33,710 2,135,394 Moshidora
*3, 32,041 *,119,718 Toshokan Sensou vol.1 Small-sized Edition
*4, 25,356 *,*89,530 Toshokan Sensou vol.2 Small-sized Edition
*5, 20,437 *,123,396 One Piece Strong Words vol.2
*6, 15,101 *,*40,136 Hanjuku Sakka to 'Bungaku Shoujo' na Muse
*7, 12,803 *,227,883 One Piece Strong Words vol.1
*8, 10,178 *,*15,861 Beelzebub BelBel Saiyuki
*9, *9,552 *,*24,096 All!! vol.2
10, *8,517 *,135,860 Gintama Kaettekita 3 nen Z gumi Ginpachi Sensei Returns
11, *8,077 *,121,691 Hidan no Aria vol.1
12, *7,888 *,148,743 IS: Infinite Stratos vol.7
13, *7,690 *,103,314 Hidan no Aria vol.2
14, *7,234 *,*35,030 Banno Kanteishi Q no Zikenbo vol.9
15, *7,232 *,101,261 Hidan no Aria vol.3
16, *6,571 *,*93,722 Hidan no Aria vol.4
17, *6,343 *,*79,218 Hidan no Aria vol.9
18, *6,064 *,*87,775 Hidan no Aria vol.5

Sources: Oricon Manga Ranking, Oricon Novel Ranking