Here are the weekly manga & light novels rankings for April 18th - 24th.

Manga
*1, 650,587 650,587 Naruto vol.55
*2, 425,882 425,882 Bleach vol.49
*3, 204,938 204,938 Gantz vol.31
*4, 133,264 133,264 Giant Killing vol.19
*5, 132,359 292,200 Fairy Tail vol.26
*6, 116,567 116,567 Thermae Romae vol.3
*7, 101,136 217,877 Ahiru no Sora vol.31
*8, *99,954 100,188 History's Strongest Disciple Kenichi vol.42
*9, *87,268 *87,268 Tegami Bachi vol.12
10, *75,484 *75,690 Kami nomi zo Shiru Sekai vol.12

11, *74,761 *74,761 Vinland Saga vol.10
12, *70,582 *70,582 Switch Girl!! vol.16
13, *64,615 519,560 Shingeki no Kyojin vol.4
14, *57,324 *57,324 Kami nomi zo Shiru Sekai vol.12 with a bookmark
15, *56,158 *56,158 Hoshi wa Utau vol.11
16, *55,167 118,988 Seitokai Yakuindomo vol.5
17, *54,947 *55,232 Gekkou Jourei vol.13
18, *50,140 *50,140 Magi vol.8
19, *49,734 *49,734 Orange Chocolate vol.6
20, *49,161 *49,161 Monochrome Shounen Shoujo vol.6

21, *46,668 138,650 Ao Haru Ride vol.1
22, *45,729 *96,685 Area no Kishi vol.25
23, *45,264 *45,264 Countach vol.23
24, *43,785 *43,785 Kochira Katsushika-ku Kamearikouen-mae Hashutsujo vol.174
25, *41,751 *41,751 Higurashi no Naku Koro ni Kai Matsuribayashi-hen vol.7
26, *41,565 *41,734 Kotetsu no Hanappashira vol.2
27, *39,197 129,944 Kuragehime vol.7
28, *35,289 *72,941 Sakura-Hime Kaden vol.8
29, *34,822 *74,424 Kimi no Iru Machi vol.13
30, *34,172 345,794 Ouran High School Host Club vol.18

Light Novel
*1, 36,302 *,*81,039 One Piece Strong Words vol.2
*2, 25,511 *,*25,511 Toshokan Sensou vol.1 Small-sized Edition
*3, 21,893 2,066,443 Moshidora
*4, 20,472 *,*20,472 Highschool DxD vol.9
*5, 19,813 *,*19,813 Mayo Chiki! vol.7
*6, 18,086 *,*18,086 Toshokan Sensou vol.2 Small-sized Edition
*7, 15,433 *,*15,433 Hi no Kuni, Kaze no Kuni Monogatari vol.12
*8, 14,993 *,*14,933 RPG World vol.8
*9, 12,777 *,132,886 IS: Infinite Stratos vol.7
10, 11,935 *,*11,935 Inazuma Eleven TV Animation Memories 2008-2011
11, 11,621 *,117,648 Gintama Kaettekita 3 nen Z gumi Ginpachi sensei Returns
12, 11,024 *,204,412 One Piece Strong Words vol.1
13, 10,577 *,*10,577 H+P Himepara vol.9
14, 10,505 *,*10,505 Seikoku no Ryukishi vol.4
15, *9,829 *,**9,829 Itsuka Tenma no Kuro Usagi Highschool Hen vol.3
16, *9,231 *,**9,231 Ore to Kazuno no Game Dokokai Katsudo Nisshi vol.4
17, *8,807 *,**8,807 Madan no Oh to Vanadis
18, *7,826 *,**7,826 Shuraba Lovers!
19, *7,716 *,**7,716 Banno Kanteishi Q no Zikenbo vol.9
20, *7,425 *,**7,425 Neet Kyuketsuki, Endo-san vol.1
21, *7,400 *,105,592 Hidan no Aria vol.1
22, *7,359 *,**7,359 Slayers Smash. vol.4

Sources: Oricon Manga Ranking, Oricon Novel Ranking