Here are the weekly manga & light novels rankings for April 25th - May 1st.

ranks/ this week's sales by copies/ cumulative sales/ titles
Manga
*1, 579,127 579,127 One Piece vol.62 *The official release date: May 2nd
*2, 198,016 848,603 Naruto vol.55
*3, 194,612 311,179 Thermae Romae vol.3
*4, 130,501 556,383 Bleach vol.49
*5, *95,361 228,625 Giant Killing vol.19
*6, *86,064 *86,064 Black Bird vol.13
*7, *68,673 *68,673 Gunslinger Girl vol.13
*8, *67,829 *67,829 Gaku Minna no Yama vol.14
*9, *67,765 *67,765 Ore no Imouto ga Konnani Kawaii Wake ga Nai vol.4
10, *67,298 *67,298 Junjou Romantica vol.14

11, *63,703 *63,703 Dengeki Daisy vol.9
12, *61,962 266,900 Gantz vol.31
13, *54,926 *53,926 Usotsuki Lily vol.4
14, *52,729 *52,749 Kokoro Botan vol.5
15, *51,400 *79,295 Mirai Nikki vol.12
16, *49,130 123,891 Vinland Saga vol.10
17, *47,831 340,031 Fairy Tail vol.26
18, *46,201 *46,201 Jisatsutou vol.5
19, *45,933 133,201 Tegami Bachi vol.12
20, *43,763 563,323 Shingeki no Kyojin vol.4

21, *43,391 113,973 Switch Girl!! vol.16
22, *39,565 *39,565 Namida Usagi - Seifuku no Kataomoi vol.6
23, *38,565 *256,442 Ahiru no Sora vol.31
24, *37,946 *37,946 Yamikin Ushijima-kun vol.21
25, *37,234 *37,436 Mangaka-san to Assistant-san to vol.6
26, *37,103 *78,854 Higurashi no Naku Koro ni Kai Matsuribayashi-hen vol.7
27, *36,216 *55,599 Fate/stay night vol.15
28, *35,764 *35,764 Bokura wa Itsumo vol.7
29, *29,919 *29,919 Dear! vol.2
30, *28,827 *28,827 Highschool of the Dead vol.7 with OVA

Light Novels
*1, 62,166 *,*87,677 Toshokan Sensou vol.1 Small-sized Edition
*2, 46,088 *,*64,174 Toshokan Sensou vol.2 Small-sized Edition
*3, 35,241 2,101,684 Moshidora
*4, 25,693 *,*25,693 Katekyo Hitman Reborn! Hidden Bullet vol.5
*5, 25,035 *,*25,035 Hanjuku Sakka to 'Bungaku Shoujo' na Muse
*6, 21,920 *,102,959 One Piece Strong Words vol.2
*7, 20,080 *,*27,796 Banno Kanteishi Q no Zikenbo vol.9
*8, 13,817 *,*33,630 Mayo Chiki! vol.7
*9, 11,358 *,*14,544 All!! vol.2
10, 10,402 *,*10,402 Hagure Yusha no Estetica vol.5
11, 10,688 *,215,080 One Piece Strong Words vol.1
12, 10,376 *,*10,376 MaoYu vol.3
13, *8,022 *,113,614 Hidan no Aria vol.1
14, *7,969 *,140,855 IS: Infinite Stratos vol.7
15, *7,392 *,**7,392 Rokujyoma no Shinnyusha!? vol.7,5
16, *7,301 *,*95,624 Hidan no Aria vol.2

Sources: Oricon Manga Ranking, Oricon Novel Ranking