Prequels, Sequels and Companion Books: What Belongs to the Main Run?
Separate the intended narrative from companions and later series before deciding which books complete a collection.
Buying the main manga run does not necessarily buy every book carrying its title. A franchise can have a prequel, a later sequel, short fiction and reference material. Identify the job of each book before deciding what a complete shelf means.
A prequel is still narrative material
Jujutsu Kaisen 0’s VIZ description centers on Yuta Okkotsu and Rika. In its prequel announcement, VIZ explicitly calls the manga the official prequel to the main series. VIZ’s announced complete box explicitly includes Volume 0 alongside the thirty main numbered volumes. Whatever reading order is chosen, zero is not a reason to exclude the book from that box’s story-book count.
The practical distinction is between where a book belongs in the narrative and where it belongs in a purchase. The set’s enumeration answers whether it is included. Choosing when to read it requires a separate argument about the story. The Jujutsu Kaisen watch guide addresses the adaptation order; it does not replace checking the manga product.
A guide can contain manga without extending the main run
VIZ describes Death Note: How to Read as a reference book containing biographies, storyline summaries, production notes and interviews, with bonus manga. Its description makes the guide’s purpose clear. The presence of a bonus chapter does not turn it into the next installment of the twelve-volume main narrative.
Death Note’s complete box enumerates volumes 1–12 plus How to Read and a fold-out. Someone buying that box receives the companion alongside the story. Someone collecting Black Edition should not assume the separate guide is included merely because that edition collects the story. The companion-book guide treats the supplementary purchases in their own right.
A sequel can begin again at Volume 1
Dragon Ball Super Volume 1’s publisher synopsis begins after Goku has defeated Boo and introduces Beerus’s search. It is a later story carrying a new Volume 1 label, rather than the first original Dragon Ball volume in another binding. The spine number alone would miss that distinction.
The consequence for buying is straightforward. Finishing one numbered run does not establish ownership of a sequel that restarts its numbering. Likewise, a sequel’s continuing publication does not make the earlier run unfinished. Consult the original Dragon Ball guide and the Super guide as separate purchases.
Define the collection before completing it
| Goal | Question to answer |
|---|---|
| Main narrative | Which books carry the intended story, including any relevant prequel? |
| A specific box | What does the publisher explicitly enumerate? |
| Companion material | Which guides or bonus-story books are separate purchases? |
| Later narrative | Does a sequel use its own title and numbering? |
The strongest objection is that categories can be untidy: a guide with bonus manga is both reference material and a source of fiction. There is no need to force it into a single universal category. Describe its contents and keep the purchase count separate from the main-run count. That gives a reader enough information to decide whether the extra book belongs on their shelf.