Edition contents & overlap
Assassination Classroom Volumes: 21 in Total, and the Box Set
Published 9 September 2026 · Source dates are listed with each edition
Assassination Classroom has 21 volumes in English from VIZ. The Complete Box Set collects all 21 plus a mini yearbook; check it against the volumes you own.
Mapped coverage: The English Complete Box Set containing volumes 1–21. The mini yearbook is listed separately from story coverage.
Creator: Yusei Matsui Publisher: VIZ Media
Short answer
The quick answer
Assassination Classroom by Yusei Matsui has 21 volumes in English from VIZ Media’s SHONEN JUMP imprint, and VIZ marks volume 21 as the final volume (VIZ volume list). The Complete Box Set (ISBN 978-1-9747-1014-0, released September 3, 2019) is VIZ’s box edition (VIZ box set page). Our catalog, from the distributor’s record, lists it as volumes 1–21 plus a full-color mini yearbook, which is not a 22nd volume.
| Edition | Books | Story covered | Extra |
|---|---|---|---|
| Single volumes | 21 | Volumes 1–21 | None |
| Complete Box Set | 1 box | Volumes 1–21 | Full-color mini yearbook (not a numbered volume) |
Sources: Distributor record for the box set.
Documented contents
What each edition covers
Numbering: Assassination Classroom English single-volume numbering. It describes mapped story units only; separately documented extras remain separate.
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| Edition | Covered volume | Format | Language / market | ISBN-13 | Extras | Source |
|---|---|---|---|---|---|---|
| Assassination Classroom Complete Box SetView on Amazon US ↗ | 1–21 | Paperback box set | English / US | 9781974710140 | Full-color mini yearbook | Publisher source for Assassination Classroom Complete Box Set Checked 2026-09-09 |
Each record retains its own source-check date. A missing ISBN is reported as not verified; unknown extras are never inferred.
Mapped coverage
1–21 · 21 mapped story units across 1 documented editions. This is the range in this map, not a claim that the series is complete.
Your shelf
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The English Assassination Classroom Complete Box Set contains volumes 1–21 and a separately listed full-color mini yearbook. This page maps the 21 numbered story units. The yearbook does not become a twenty-second manga volume.
Two shelves, two different purchase questions
If you own volumes 1–7, the set adds 8–21 and duplicates seven: fourteen new units. If you own 1–7 and 15–21, the gap is only 8–14. Both shelves include the same first book, but the second reader needs seven new units rather than fourteen.
Mark only the volumes you have, set the target, then inspect the new and overlapping lists. You can save the selection on this device or export a plain checklist. The result does not claim the full box is the cheapest way to fill those gaps.
Keep the yearbook separate from the count
The authorized distributor describes the yearbook as character art in different styles and contexts. It is a documented extra, not evidence of another numbered story volume. If your shelf already covers 1–21, the box has no new story coverage in this map. Whether you want the extra is a separate decision.
The set ISBN is separate from the ISBNs of its individual books. For a package-identity checklist that explains the difference, use ISBNs and manga edition identity. No cover image or physical-quality judgment is needed to make the documented volume comparison.
To weigh the box against the singles you still need, use the box set vs singles cost worksheet; for a gift, see the box set gift guide.