9/18/2026

Yama Wayama's 'Onna no Sono no Hoshi' Vol. 5 Courtesy Photo

Yama Wayama’s Onna no Sono no Hoshi Vol. 5 hits No. 1 on the Billboard Japan Book Hot 100 chart released Sept. 17, sweeping brick-and-mortar and e-books.

The latest volume of Wayama’s comedy manga set at an all-girls high school lands in the top 10 across four metrics — No. 1 in brick-and-mortar and e-books, No. 2 in e-commerce (EC) and No. 10 in social media — finishing with more than three times the points of the runner-up.

Debuting at No. 2 is Kaoru Hana wa Rin to Saku Vol. 24, which received an anime adaptation last year, placing No. 4 in both brick-and-mortar and e-books. Osamu Nishi’s Mairimashita! Iruma-kun Vol. 50 follows at No. 3, led by the brick-and-mortar metric.

The Billboard Japan Book Hot 100 is a comprehensive chart combining physical sales, e-books, library loans, subscription data and social media activity. Below are the top 10 titles on this week’s list, tracking the period from Sept. 7 to 13.

(Numbers in parentheses indicate the title’s metric placements for brick-and-mortar, EC, e-books, subscriptions, and social media, top 20 only. English title given if translations or adaptations exist.)

1. Onna no Sono no Hoshi Vol. 5, Yama Wayama (1/2/1/–/10)

2. Kaoru Hana wa Rin to Saku (The Fragrant Flower Blooms with Dignity) Vol. 24, Saka Mikami (4/–/4/–/–)

3. Mairimashita! Iruma-kun (Welcome to Demon School! Iruma-kun) Vol. 50, Osamu Nishi (2/14/–/–/–)

4. Kagurabachi Vol. 12, Takeru Hokazono (5/12/8/–/–)

5. Dandadan Vol. 25, Yukinobu Tatsu (6/20/3/–/–)

6. Uruwashi no Yoi no Tsuki (In the Clear Moonlit Dusk) Vol. 11, Mika Yamamori (11/–/2/–/–)

7. Kimura Keito Visual Book “Visuarts,” Keito Kimura (–/1/–/–/–)

8. Anata no Oshiro no Kobito-san — Gohan Kudasai, Hatarakimasu! Vol. 5, Kazuhito Minagi, Pe Neko R, Kazumi Kurihara (3/10/–/–/–)

9. WIND BREAKER Vol. 27, Satoru Nii (7/–/–/–/–)

10. Isekai Nonbiri Noka (Farming Life in Another World) Vol. 17, Kinosuke Naito, Yasuyuki Tsurugi, Yasumo (9/–/9/–/–)

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