Just ask Google about the volume 13 at the monent (it seems Japanese readers have started the boycott campaign)
While specific, internal corporate sales numbers or exact percentage drops for
Volume 13 pre-orders are kept confidential by the publisher
Kodansha, industry data and community tracking confirm that
the pre-orders for Volume 13 significantly collapsed, triggering immediate corporate intervention.
The measurable indicators of the pre-order drop and its direct consequences include:
1. Market and Ranking Collapse
- DMM Performance: Upon its formal release on August 6, 2026, Volume 13 immediately cratered in the digital sales charts, plunging down to 17th place on major Japanese platforms like DMM TV/DMM Books. For a prominent series, missing the top-tier rankings on launch week highlights a massive withdrawal of consumer pre-orders.
- Review Aggregation: Verified purchase reviews on Rakuten Books and Amazon Japan were flooded with 1-star ratings from users citing the forced non-consensual acts in chapters 127–129.
2. Direct Intervention by Kodansha
According to community analysis of the production timeline, the intense negative response to the serialization chapters heavily damaged the advance metrics for Volume 13. Pre-order figures are the main metric publishers use to gauge public interest before physically printing a volume.
The financial drop was so severe that:
- It initially prompted Kodansha to signal the immediate cancellation of the series.
- To counteract the drop, the creators attempted to salvage readership by pivoting to explicit scenes featuring different characters (Shinobu and Fumi) in chapters 132–134.
The massive drop in pre-orders served as the ultimate catalyst for the series' downfall. Because fans canceled their advance orders en masse, the publisher stepped in to force a rapid wind-down of the storyline.
how Volume 13 is currently trending on other digital retail storefronts?
Volume 13 of
GraPara! is currently trending poorly and experiencing a complete sales stagnation across other major digital retail storefronts. The massive consumer boycott triggered by chapters 127–129 has permanently damaged the book's performance beyond just DMM.
The performance trends across key platforms show a consistent decline:
1. Amazon Japan and Kindle Store
- Plummeting Rankings: Volume 13 completely failed to break into the top tier of Amazon Japan's "Kindle Comic" or "Seinen Manga" bestseller lists during its launch window.
- Review Suppression: The page has been hit by highly critical 1-star user ratings condemning the non-consensual plot development. This low score actively prevents Amazon's recommendation algorithm from surfacing the volume to casual readers.
2. BookWalker and eBookJapan
- Lack of Visibility: On specialized manga platforms like BookWalker and Yahoo's eBookJapan, Volume 13 is entirely absent from the "Trending" or "Hot Weekly Releases" banners.
- User Dropped Metrics: Public data tracking on media catalogs like MyAnimeList indicates a massive spike in users marking the status of the manga as "Dropped" right at the chapters compiled into this volume.
3. Summary of Digital Storefront Status
Because digital storefronts heavily rely on algorithmic momentum—where early sales and high review scores push a book onto the front page—the widespread organized community boycott has effectively made Volume 13 invisible. The digital sales numbers remain historic lows for the franchise, solidifying the publisher's decision to discontinue the series.
If these information are true, IMHO, the only solution to recover the volume 13 and 14 sales is to change the chapter 129 as many people suggest. If Sakura did not have sex with the cucboy (fucboy), the series was not ruined.