Oricon (Japanese research organization) released its weekly manga ranking for the week of 2024/06/24.

Related rankings are compiled here
Oricon Comic Ranking Summary

1st place goes to "Don't Call It Mystery Vol. 14." This series has gained significant popularity in Japan, leading to a successful TV drama adaptation and a movie.

2nd place is "That Time I Got Reincarnated as a Slime Vol. 26," which was 1st place last week.

3rd place goes to "Welcome to Demon School! Iruma-kun Vol. 38," serialized in Weekly Shonen Champion. Additionally, the 4th place is a spin-off of the same series, showcasing its high popularity.

5th place is "Let Me Stay as Your Dislike Vol. 6," an Omegaverse boys' love manga that is gaining widespread popularity.

Manga Don't Call It Mystery 14

During the investigation of a certain case, Detective Ikemoto of the Ohtonari Police Station meets Totonou. One day, while on his way to visit his wife and child at his hometown, Ikemoto gets trapped in a tunnel due to a landslide. Several men and women are also stranded there...

While Ikemoto tries to unravel the mystery, Totonou sees the news about the tunnel accident on TV and...

Oricon Weekly Manga Sales Ranking

Ranking / Estimated number of copies sold / Estimated cumulative sales volume / Title / Author

1 187,868 220,652 Don't Call It Mystery 14 Yumi Tamura
2 137,371 289,064 That Time I Got Reincarnated as a Slime 26 (Art) Taiki Kawakami / (Story) Fuse / (Character Design) Mitz Vah
3 51,547 100,683 Welcome to Demon School! Iruma-kun 38 Osamu Nishi
4 36,727 70,717 Welcome to Demon School! Iruma-kun if Episode of Demon Mafia 2 (Art) hiromono / (Story) Osamu Nishi
5 30,225 33,475 Kiraide Isasete - Lass mich dich hassen 6 Hijiki
6 29,020 58,023 We Are the Main Characters of the Demon World! 18 (Art) Atsushi Tsudanuma / (Story) Osamu Nishi / (Supervisor) Koneshima
7 26,930 93,787 The Summer Hikaru Died 5 Mokumokuren
8 26,556 26,556 A Man and His Cat 13 Umi Sakurai
9 23,287 88,927 Blue Exorcist 31 Kazue Kato
10 22,792 71,093 MF Ghost 20 Shuichi Shigeno