est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
A small group of adults have been invited to a reunion at their old highschool to remember the loss of their classmate Kiriko, after receiving a letter "From K." Not knowing who "K" is, Ryosuke, a young man with short black hair that used to know Kiriko, has to uncover the truth of Kiriko's mysterious death. As he slowly regains his memories as his fellow classmates start suddenly dying around him in the most horrific manner, he realises that it's far too late to say sorry.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
Nichibun comics First edition
1vols · 2015-03
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ハカイジュウ
2010 · 本田真吾 · 23vols · Shōnen
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2005 · 本田真吾 · 15vols · Shōnen
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Pierrot-Man
ピエロマン
2023 · 本田真吾, 高橋伸輔 · 9vols
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2022 · 本田真吾 · 5vols
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2025 · 本田真吾 · 5vols
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2019 · 本田真吾 · 3vols
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