The following classification is from the Oricon's official website. It lists the best-selling volumes in Japan during the week: June 17-June 23
1 - Fairy Tail 38 (Hiro MASHIMA)
Number of volumes sold this week: 263 367
Number of volumes sold in total: 264 076
2 - Uchū Kyōdai / Space Brothers 21 (Chūya KOYAMA)
Number of volumes sold this week: 152 734
Number of volumes sold in total: 152 734
3 - One Piece 70 (Eiichiro ODA)
1 - Fairy Tail 38 (Hiro MASHIMA)
Number of volumes sold this week: 263 367
Number of volumes sold in total: 264 076
2 - Uchū Kyōdai / Space Brothers 21 (Chūya KOYAMA)
Number of volumes sold this week: 152 734
Number of volumes sold in total: 152 734
3 - One Piece 70 (Eiichiro ODA)
Number of volumes sold this week: 141 208
Number of volumessold in total: 2 559 632
Number of volumes sold this week: 135 164
Number of volumes sold in total: 135 564
Number of volumes sold this week: 122 629
Number of volumes sold in total: 123 453
Number of volumes sold this week: 101 106
Number of volumes sold in total: 303 879
Number of volumes sold this week: 78 199
Number of volumes sold in total: 78 871
Number of volumes sold this week: 77 197
Number of volumes sold in total: 77 197
Number of volumes sold this week: 71 570
Number of volumes sold in total: 71 570
Number of volumes sold this week: 70 735
Number of volumes sold in total: 70 735
Note: For those who want to know the other 40 volumes of the ranking, the list is available here.