That Time I Got Reincarnated as a Slime Vol. 32 Dominates Billboard Japan Book Hot 100, Signifying Continued Manga Popularity

Tokyo, Japan – June 18, 2026 – The latest installment of the immensely popular manga series, Tensei Shitara Suraimu Datta Ken (That Time I Got Reincarnated as a Slime) Vol. 32, has ascended to the pinnacle of the Billboard Japan Book Hot 100 chart, as announced on June 18. This marks the second time the comic adaptation of the light novel series by Fuse and illustrated by Mitz Vah, with story by Taiki Kawakami, has claimed the coveted number one position, underscoring its enduring appeal among Japanese readers. The series’ dominance is further evidenced by its top ranking in both physical bookstore sales and digital e-book formats, reflecting a broad and engaged readership across various consumption platforms.

The Billboard Japan Book Hot 100, a comprehensive metric that amalgamates physical sales, e-book figures, library loans, subscription data, and social media engagement, provides a holistic view of the literary market’s pulse. The chart tracking the period from June 8 to June 14 saw That Time I Got Reincarnated as a Slime Vol. 32 achieve a near-sweep of the top metrics, securing the number one spot in brick-and-mortar sales and e-books, and a strong showing in e-commerce (EC) at number three. This success builds upon its previous chart-topping performance on February 19, indicating sustained momentum and a dedicated fanbase.

A Look at the Top Contenders and Emerging Trends

Following closely behind the reigning manga is Sota Nakajima’s 2nd Shashinshuu "THE SELF", which debuts at number two. This photobook, meticulously captured across various European locales, has demonstrated significant traction in the e-commerce sector, highlighting the strong market for visual content and celebrity photography in online retail spaces. The success of such personal artistic endeavors on a major chart suggests a growing appetite for diverse content beyond traditional literary genres.

Securing the third position is Saka Mikami’s Kaoru Hana wa Rin to Saku (The Fragrant Flower Blooms with Dignity) Vol. 23. The animated adaptation of this series, which aired last year, has evidently spurred renewed interest in the source material. The manga achieved a well-rounded performance, ranking second in physical sales, fifth in e-books, and twentieth in e-commerce. This multi-faceted success illustrates the powerful synergy between different media formats in driving consumption and maintaining reader engagement. The anime’s popularity likely introduced new audiences to the manga, while existing fans continued to support the series through their preferred purchase channels.

Shifting Dynamics in the Top Tier

Tatsuki Fujimoto’s highly anticipated Chainsaw Man Vol. 24, which held the number one spot in the previous week’s ranking, has slipped to fourth place. Despite this slight decrease, its continued presence within the top ten signifies its robust popularity and ongoing demand. The manga’s unique blend of dark fantasy and action has cultivated a substantial global following, and each new volume release generates significant buzz and sales.

Mizuki Tsujimura’s latest literary offering, Fire Dome, a two-part novel commemorating the author’s 22nd anniversary, has shown impressive upward mobility. Both volumes have climbed the charts: Volume 1, which continues to dominate the social media metric for the second consecutive week, rose from 10th to 9th place. Volume 2, meanwhile, surged from 18th to 12th. The sustained social media buzz surrounding Fire Dome underscores the influence of online discourse and fan engagement in shaping literary success. Tsujimura’s ability to generate consistent online conversation, even amidst strong competition from manga, speaks to her established authorial brand and the compelling nature of her narratives.

Contextualizing the Billboard Japan Book Hot 100

The Billboard Japan Book Hot 100’s methodology is designed to reflect the multifaceted nature of book consumption in the digital age. By integrating physical sales from bookstores, digital sales from e-book platforms, library loan data, subscription service engagement, and the pervasive influence of social media, the chart offers a nuanced perspective on what is capturing the attention of Japanese readers. This comprehensive approach ensures that the chart accurately represents the diverse pathways through which books gain popularity and achieve commercial success.

The chart’s breakdown of metric placements, indicated by numbers in parentheses, provides granular insight into the performance of each title across different categories. For instance, the top 20 placements for brick-and-mortar sales, e-commerce, e-books, subscriptions, and social media offer a detailed performance snapshot.

Detailed Breakdown of the Top 10 Titles (June 8 – June 14, 2026)

1. Tensei Shitara Suraimu Datta Ken (That Time I Got Reincarnated as a Slime) Vol. 32 (Comic Edition)

   

   • Authors: Taiki Kawakami, Fuse, Mitz Vah
   • Metric Placements: Brick-and-Mortar (1), E-commerce (3), E-books (1), Subscriptions (N/A), Social Media (N/A)
   • Analysis: The series’ consistent ability to capture the top spot in both physical and digital formats indicates a robust and unified fanbase. Its strong e-commerce ranking suggests effective online marketing and distribution strategies.

2. Nakajima Sota 2nd Shashinshuu "THE SELF"

   • Artist: Sota Nakajima
   • Metric Placements: Brick-and-Mortar (N/A), E-commerce (1), E-books (N/A), Subscriptions (N/A), Social Media (N/A)
   • Analysis: This photobook’s dominance in the e-commerce sector highlights the power of visually driven content and direct-to-consumer sales channels. The artist’s ability to resonate with audiences through a purely online retail presence is a significant trend.

3. Kaoru Hana wa Rin to Saku (The Fragrant Flower Blooms with Dignity) Vol. 23

   • Author: Saka Mikami
   • Metric Placements: Brick-and-Mortar (2), E-commerce (20), E-books (5), Subscriptions (N/A), Social Media (N/A)
   • Analysis: The successful cross-promotion between the manga and its animated series is evident. The strong performance in physical sales suggests a loyal readership that prefers tangible copies, while its e-book presence indicates accessibility for digital readers.

4. Chainsaw Man Vol. 24

   • Author: Tatsuki Fujimoto
   • Metric Placements: Brick-and-Mortar (5), E-commerce (N/A), E-books (2), Subscriptions (N/A), Social Media (N/A)
   • Analysis: Despite a slight dip from its previous number one position, Chainsaw Man‘s continued high ranking in e-books demonstrates its strong digital appeal. The series’ global phenomenon status likely contributes to its consistent sales figures.

5. Mairimashita! Iruma-kun (Welcome to Demon School! Iruma-kun) Vol. 49

   • Author: Osamu Nishi
   • Metric Placements: Brick-and-Mortar (3), E-commerce (N/A), E-books (N/A), Subscriptions (N/A), Social Media (N/A)
   • Analysis: A consistent performer, Welcome to Demon School! Iruma-kun maintains its strong presence in physical sales, suggesting a dedicated audience that actively supports the series’ ongoing narrative.

6. WIND BREAKER Vol. 26

   • Author: Satoru Nii
   • Metric Placements: Brick-and-Mortar (4), E-commerce (N/A), E-books (N/A), Subscriptions (N/A), Social Media (N/A)
   • Analysis: Similar to Iruma-kun, WIND BREAKER shows resilience in physical sales, indicating a stable and committed readership that values traditional purchasing methods.

7. Dandadan Vol. 24

   • Author: Yukinobu Tatsu
   • Metric Placements: Brick-and-Mortar (7), E-commerce (N/A), E-books (7), Subscriptions (N/A), Social Media (N/A)
   • Analysis: This title’s balanced performance across physical and digital formats suggests a broad appeal that transcends specific consumption preferences.

8. Tensei Kizoku, Kantei Skill de Nariagaru (As a Reincarnated Aristocrat, I’ll Use My Appraisal Skill to Rise in the World) Vol. 21

   • Authors: Miraijin A, Natsumi Inoue, jimmy
   • Metric Placements: Brick-and-Mortar (10), E-commerce (N/A), E-books (3), Subscriptions (N/A), Social Media (N/A)
   • Analysis: The strong performance in e-books indicates that this series is particularly popular among digital readers, possibly due to its intricate world-building and character development, which may appeal to readers who prefer on-the-go access.

9. Fire Dome Vol. 1

   • Author: Mizuki Tsujimura
   • Metric Placements: Brick-and-Mortar (14), E-commerce (12), E-books (N/A), Subscriptions (N/A), Social Media (1)
   • Analysis: The exceptional performance in social media for Volume 1 is a critical factor in its overall chart success. This suggests that fan discussions, online reviews, and social media campaigns are highly effective in driving initial interest and sales for new literary works.

10. Yusha Party wo Oidasareta Kiyoubinbo (Jack-of-All-Trades, Party of None) Vol. 19

    • Authors: Yonezou, Itsuki Togami, Yuri Kisaragi
    • Metric Placements: Brick-and-Mortar (17), E-commerce (N/A), E-books (4), Subscriptions (N/A), Social Media (N/A)
    • Analysis: This series’ consistent presence in the top rankings, particularly its strong showing in e-books, indicates a dedicated following that appreciates its unique premise and narrative execution.

Broader Implications and Industry Trends

The continued dominance of manga on the Billboard Japan Book Hot 100 reflects the genre’s significant cultural and economic impact. Series like That Time I Got Reincarnated as a Slime and Chainsaw Man not only lead sales charts but also fuel ancillary markets, including anime adaptations, merchandise, and international publishing. The data suggests a robust and evolving reader base that engages with content across multiple platforms.

The strong performance of photobooks, like Sota Nakajima’s 2nd Shashinshuu "THE SELF", highlights the growing importance of visual content and the power of celebrity influence in the book market. The e-commerce metric, where such items often excel, points to the increasing reliance on online retail for book purchases.

Furthermore, the chart’s performance of Mizuki Tsujimura’s Fire Dome underscores the evolving role of social media in book discovery and promotion. A strong social media presence can significantly impact a book’s visibility and sales, particularly for new releases or authors seeking to expand their reach. This trend suggests that publishers and authors must increasingly prioritize digital engagement and community building to achieve sustained success.

The Billboard Japan Book Hot 100 serves as a vital barometer for the Japanese literary landscape, offering valuable insights into reader preferences, market dynamics, and the interplay between different media. As the industry continues to adapt to technological advancements and shifting consumer behaviors, charts like these provide essential data for understanding the pulse of the book market and predicting future trends. The consistent performance of established series, coupled with the rise of new and diverse content, paints a vibrant picture of the contemporary Japanese reading culture.