Oricon has released the half year sales chart available here detailing the performance of Manga sold in Japan for the period between December 2, 2019 to May 25, 2020. The charts for Manga are divided into two parts, one where the total of all volumes sold is taken into account while the other segregates them into individual volumes sold. The unofficial Twitter of Weekly Shonen Jump shared figures for the Top 10 and Top 50 of total volumes sold and total individual volumes sold, but I am unable to source the data provided. You can find them here if you are interested. If you could source the full Top 10 and Top 50 for the aforementioned, please let me know!
Thus far, Oricon has only posted up the first half of the ranking via their site as the link provided above, however I could not source the second half through their site. Since I am not comfortable with sharing sales data without the source, I shall leave the other half (and praying that it will soon be disclosed) for later if available.
It is without a doubt that Kimetsu no Yaiba has had a splendid run during the said period (in fact ever since the Anime aired) as it hit nearly 50 million copies sold during the first half of the year. It powers through the charts as its individual volumes’ sales remain strong every week while One Piece is still popular in Japan, it has not been able to reach that level of sales projected by Kimetsu no Yaiba as of recent. Therefore, despite trailing behind Kimetsu no Yaiba at number 2, the sales disparity between the two are too big. Kimetsu no Yaiba in total, has managed 45.2 million copies sold. At the same time, One Piece has sold 4.8 million copies. Right behind One Piece is 5-toubun no Hanayome at 4.2 million copies. Kingdom and Boku no Hero Academia on the other hand, settle for 4th and 5th respectively.
Manga Total Volume Sales Ranking (Top 5)
1. Kimetsu no Yaiba
by Koyoharu Gotouge
Estimated number of copies sold: 45,297,633
2. ONE PIECE
by Eiichiro Oda
Estimated number of copies sold: 4,885,538
3. 5-toubun no Hanayome
by Negi Haruba
Estimated number of copies sold: 4,240,192
by Yasuhisa Hara
Estimated number of copies sold: 3,512,571
5. Boku no Hero Academia
by Kouhei Horikoshi
Estimated number of copies sold: 3,339,656
Source: Manga Top 5 Ranking
In terms of individual volumes sold, Kimetsu no Yaiba crushes the chart. Note that volume 20 was just out very recently (May 13) and it sold 1.9 million copies on its first week. Volume 95 and 96 of One Piece could only managed the 20 and 21 placing in the chart as Kimetsu no Yaiba occupies 1 to 19. Shingeki no Kyojin (No. 23) and Kingdom (No. 25) are the other two titles in the Top 25.
Manga Individual Volume Sales Ranking (Top 25)
Source: Manga Individual Top 25 Ranking
One Piece has been going on for a long time now, and with Kimetsu no Yaiba having its serialization ended, sales may not be the same after the final volume goes on sale. That said, the story of Kimetsu no Yaiba is a story of success. In a short span of time, it managed to sell so well in Japan. And I cannot help but to wonder, after Kimetsu no Yaiba, when will we see something of the same caliber next?