Oricon 2023 Series Ranking, estimates as of October 29th:

01./ Blue Lock - 10,419,971
02./ Jujutsu Kaisen - ~8,165,000
03./ One Piece - ~5,785,000
04./ Chainsaw Man - ~5,315,000
05./ [Oshi no Ko] - 5,193,134
06./ Slam Dunk - ~4,960,000
07./ Spy x Family - ~4,175,000
08./ Tokyo Revengers - ~3,170,000
09./ My Hero Academia - ~2,965,000
10./ Kingdom - ~2,840,000
11./ That Time I Got Reincarnated as a Slime - ~2,295,000
12./ Frieren: Beyond Journey's End - ~1,900,000
13./ Welcome to Demon School! Iruma-kun - ~1,890,000
14./ The Apothecary Diaries - ~1,680,000
15./ Kaiju No. 8 - ~1,490,000
16./ Do Not Say Mystery - ~1,400,000
17./ Mashle: Magic and Muscles - ~1,320,000
18./ Aoashi - ~1,305,000
19./ Sakamoto Days - ~1,245,000
20./ Detective Conan - ~1,230,000
21./ Toilet-Bound Hanako-kun - ~1,185,000
22./ Record of Ragnarok - ~1,160,000
23./ Loving Yamada at LV999! - ~1,110,000
24./ Blue Box - ~1,080,000
25./ Bocchi the Rock! - ~1,065,000

Top 10 best-selling manga series:
RANK./LAST YEAR'S RANK. TITLE [WRITER] ( MAGAZINE / PUBLISHER ) {NUMBER OF VOLUMES PUBLISHED} - YEAR-TO-DATE SALES

01./07. Blue Lock [Muneyuki Kaneshiro / Yusuke Nomura] (Weekly Shōnen Magazine / Kōdansha) {5 volumes} - 10,527,146 (+197%)
02./01. Jujutsu Kaisen [Gege Akutami] (Weekly Shōnen Jump / Shūeisha) {4 volumes} - 8,541,411 (-30%)
03./04. One Piece [Eiichirō Oda] (Weekly Shōnen Jump / Shūeisha) {3 volumes} - 7,197,532 (-31%)
04./41. [Oshi no Ko] [Aka Akasaka / Mengo Yokoyari] (Weekly Young Jump / Shūeisha) {4 volumes} - 5,413,091 (+393%)
05./08. Chainsaw Man [Tatsuki Fujimoto] (Weekly Shōnen Jump / Shūeisha) {3 volumes} - 5,348,618 (+56%)
06./27. Slam Dunk [Takehiko Inoue] (Weekly Shōnen Jump / Shūeisha) {0 volumes} - 4,968,484 (+260%)
07./03. Spy x Family [Tatsuya Endo] (Shōnen Jump+ / Shūeisha) {2 volumes} - 4,326,425 (-59%)
08./05. My Hero Academia [Kōhei Horikoshi] (Weekly Shōnen Jump / Shūeisha) {3 volumes} - 3,528,423 (-34%)
09./02. Tokyo Revengers [Ken Wakui] (Weekly Shōnen Magazine / Kōdansha) {1 volume} - 3,218,117 (-71%)
10./06. Kingdom [Yasuhisa Hara] (Weekly Young Jump / Shūeisha) {4 volumes} - 3,207,691 (-16%)

Top 50 Best-Selling Manga Volumes:
RANK. TITLE [RELEASE DATE] - YEAR-TO-DATE SALES

01. One Piece #105 [2023.03.03] - 1,912,008
02. Jujutsu Kaisen #21 [2022.12.02] - 1,777,867
03. One Piece #106 [2023.07.04] - 1,690,973
04. Jujutsu Kaisen #22 [2023.03.03] - 1,643,782
05. Jujutsu Kaisen #23 [2023.07.04] - 1,456,419
06. Spy x Family #11 [2023.04.04] - 1,393,917
07. One Piece #107 [2023.11.02] - 1,300,580
08. Jujutsu Kaisen #24 [2023.10.04] - 1,191,177
09. Spy x Family #12 [2023.10.04] - 1,042,514
10. Tokyo Revengers #31 [2023.01.17] - 914,042
11. My Hero Academia #37 [2023.02.03] - 790,758
12. Chainsaw Man #13 [2023.01.04] - 744,238
13. My Hero Academia #38 [2023.06.02] - 702,953
14. Kingdom #67 [2023.01.19] - 664,956
15. Kingdom #68 [2023.04.18] - 630,320
16. Kingdom #69 [2023.07.19] - 598,761
17. Blue Lock #22 [2022.12.16] - 591,562
18. Chainsaw Man #14 [2023.04.04] - 587,873
19. That Time I Got Reincarnated as a Slime #22 [2022.12.08] - 560,718
20. Blue Lock #23 [2023.03.16] - 545,454
21. [Oshi no Ko] #10 [2023.01.19] - 529,138
22. Tokyo Revengers #30 [2022.11.17] - 526,407
23. [Oshi no Ko] #11 [2023.03.17] - 520,936
24. Do Not Say Mystery #12 [2023.01.10] - 518,149
25. That Time I Got Reincarnated as a Slime #23 [2023.05.09] - 507,961
26. Kaiju No. 8 #9 [2023.03.03] - 505,921
27. My Hero Academia #39 [2023.11.02] - 492,648
28. Blue Lock #24 [2023.05.17] - 483,803
29. [Oshi no Ko] #12 [2023.07.19] - 480,499
30. The First Slam Dunk re:Source [2022.12.15] - 473,852
31. Detective Conan #103 [2023.04.12] - 454,505
32. Frieren: Beyond Journey's End #10 [2023.03.16] - 448,465
33. The Apothecary Diaries #11 [2023.02.25] - 445,602
34. Chainsaw Man #15 [2023.08.04] - 443,242
35. [Oshi no Ko] #1 [2020.07.17] - 442,445
36. March Comes in Like a Lion #17 [2023.08.29] - 437,835
37. One Piece #104 [2022.11.04] - 437,349
38. Do Not Say Mystery #13 [2023.09.08] - 435,661
39. That Time I Got Reincarnated as a Slime #24 [2023.09.08] - 431,702
40. [Oshi no Ko] #5 [2021.08.18] - 426,318
41. World Trigger #26 [2023.06.02] - 416,641
42. [Oshi no Ko] #9 [2022.10.19] - 416,636
43. [Oshi no Ko] #4 [2021.05.19] - 415,404
44. Blue Lock #21 [2022.10.17] - 415,272
45. Frieren: Beyond Journey's End #11 [2023.09.15] - 415,109
46. Blue Lock #12 [2020.12.17] - 410,687
47. Blue Lock #13 [2021.03.17] - 409,092
48. [Oshi no Ko] #6 [2021.11.19] - 406,519
49. Blue Lock #14 [2021.05.17] - 404,422
50. Blue Lock #20 [2022.07.15] - 403,163

Oricon 2024 Series Ranking, estimates as of December 31st:

01./ Frieren: Beyond Journey's End - 1,481,266
02./ The Apothecary Diaries - 1,272,125
03./ Jujutsu Kaisen - 774,027
04./ Blue Lock - 602,353
05./ [Oshi no Ko] - 460,087
06./ Delicious in Dungeon - ~450,000
07./ Chainsaw Man - ~380,000
08./ Kingdom - 366,786
09./ One Piece - 358,289
10./ Kaiju No. 8 - ~345,000
11./ Chiikawa Nanka Chiisakute Kawaii Yatsu - ~340,000
12./ Spy x Family - ~245,000
13./ Shangri-la Frontier - ~240,000
14./ Jojo's Bizarre Adventure - ~240,000
15./ My Hero Academia - 236,935
16./ Blue Box - ~235,000
17./ Welcome to Demon School! Iruma-kun - ~235,000
18./ Record of Ragnarok - ~210,000

Oricon 2024 Series Ranking, estimates as of February 4th:

01./ Jujutsu Kaisen - 2,629,836
02./ Frieren: Beyond Journey's End - 2,323,409
03./ The Apothecary Diaries - 2,060,264
04./ Blue Lock - 921,547
05./ [Oshi no Ko] - 651,013
06./ Delicious in Dungeon - ~650,000
07./ That Time I Got Reincarnated as a Slime - ~595,000
08./ One Piece - 511,717
09./ Chainsaw Man - ~505,000
10./ Chiikawa Nanka Chiisakute Kawaii Yatsu - ~460,000
11./ Kingdom - ~455,000
12./ Kaiju No. 8 - ~445,000
13./ Spy x Family - ~430,000
14./ My Hero Academia - 371,475
15./ Jojo's Bizarre Adventure - ~355,000
16./ Blue Box - ~355,000
17./ Shangri-la Frontier - ~345,000
18./ Welcome to Demon School! Iruma-kun - ~325,000
19./ Haikyu!! - ~315,000
20./ Sakamoto Days - ~295,000

Oricon 2024 Series Ranking, estimates as of March 3rd:

01./ Jujutsu Kaisen - 2,943,349
02./ Frieren: Beyond Journey's End - 2,809,679
03./ The Apothecary Diaries - 2,469,431
04./ Blue Lock - 1,072,519
05./ Kingdom - ~985,000
06./ Haikyu!! - ~830,000
07./ One Piece - 776,234
08./ Delicious in Dungeon - ~775,000
09./ [Oshi no Ko] - 732,539
10./ That Time I Got Reincarnated as a Slime - ~675,000
11./ Chainsaw Man - ~550,000
12./ Chiikawa Nanka Chiisakute Kawaii Yatsu - ~535,000
13./ Spy x Family - ~515,000
14./ Mashle: Magic and Muscles - ~500,000
15./ Welcome to Demon School! Iruma-kun - ~500,000
16./ Kaiju No. 8 - ~495,000
17./ My Hero Academia - ~440,000
18./ Golden Kamuy - ~435,000
19./ Jojo's Bizarre Adventure - ~405,000
20./ Blue Box - ~400,000

Oricon 2024 Series Ranking, estimates as of April 7th:

01./ Jujutsu Kaisen - 3,924,431
02./ The Apothecary Diaries - 3,459,071
03./ Frieren: Beyond Journey's End - 3,399,549
04./ One Piece - 2,032,906
05./ Blue Lock - 1,619,645
06./ Spy x Family - ~1,480,000
07./ Haikyu!! - ~1,450,000
08/. Kingdom - ~1,210,000
09./ Delicious in Dungeon - ~935,000
10./ Mashle: Magic and Muscles - ~930,000
11./ My Hero Academia - ~885,000
12./ [Oshi no Ko] - ~800,000
13./ That Time I Got Reincarnated as a Slime - ~750,000
14./ Chainsaw Man - ~740,000
15./ Kaiju No. 8 - ~710,000
16./ Chiikawa Nanka Chiisakute Kawaii Yatsu - ~625,000
17./ Blue Box - ~605,000
18./ Welcome to Demon School! Iruma-kun - ~560,000
19./ Golden Kamuy - ~555,000
20./ Sakamoto Days - ~465,000