The latest volume of the wildly popular Solo Leveling webtoon series has seized the No. 1 position on Billboard Japan's Book Hot 100 chart following its release.

Volume 25 of the series, which follows protagonist Sung Jinwoo's journey through a supernatural world, continues the franchise's impressive chart momentum in Japan. The volume's strong performance reflects the sustained popularity of the Solo Leveling adaptation across multiple formats.

The release also created a ripple effect on the chart, with a paperback edition lift propelling another title—Naruse—to the No. 2 position. This kind of chart movement shows how physical book releases and format variations continue to drive reading trends in Japan's publishing market.

Solo Leveling has become a cultural phenomenon since its original webtoon debut, spawning successful manga adaptations, a live-action film, and anime projects. The series' consistent chart performance in Japan underscores its appeal to Japanese readers, who have embraced the Korean webtoon's blend of action, character development, and world-building.

The Billboard Japan Book Hot 100 ranks the most popular books and manga across the country, making it a key indicator of what's resonating with readers. Solo Leveling's continued dominance suggests the franchise maintains strong momentum heading into the second half of 2026.