That Time I Got Reincarnated as a Slime Leads 2026 Manga Sales Rankings

A PR Times ranking based on Ebookjapan sales shows that the manga series *That Time I Got Reincarnated as a Slime* was the top-selling title in the first half of 2026, topping a list of the 50 best‑selling books. Volume 31, released in February 2026, moved more than 345,000 copies in May, adding to cumulative sales that had already surpassed 40 million copies by February 2023. The series, written by Fuse and illustrated by Taiki Kawakami, has been published since 2015 and continues to drive strong demand.

The anime adaptation is in its fourth season, the longest to date, with five cours planned over the coming years. The season’s first part concluded in spring 2026, and a trailer for the second part hints at new antagonists and a possible descendant character, keeping audience interest high.

These figures highlight the enduring popularity of the isekai genre in Japan and the series’ status as a commercial pillar among relatively few new releases in 2026.