Start with volume one of Monster and read straight through to volume nine. There is no alternative order, no side story to slot in, and no controversy — Naoki Urasawa wrote a single continuous thriller and every volume picks up where the last one stopped.
One practical warning before you begin, because it will confuse you otherwise. All nine volumes are catalogued here under the identical title, Monster, with no volume numbers attached. Go by the order they appear in the reading path, not by the title on the cover. These are the nine Perfect Edition volumes, each collecting two of the original eighteen, which is the edition currently in print in English and the one worth buying.
What you are reading
A Japanese neurosurgeon working in Germany in the 1980s makes a choice about which of two patients to operate on. One of them turns out to be someone he should have let die. That is the whole premise, and Urasawa spends roughly 6,000 pages following it across post-reunification Germany and into the Czech Republic.
A Perfect Edition volume runs around 400 pages and takes 90 minutes to two hours to read properly. Manga is faster than prose, but this is dense and dialogue-heavy, and skimming panels will cost you a plot thread you need three hundred pages later. One volume per sitting is the right unit.
Volumes one and two: the setup
About a week. Everything the series does later is established here, and the pace is deliberately slower than a thriller reader expects. If you are not gripped by the end of volume two, this is not going to convert you.
Volumes three to five: the hunt widens
Ten days to two weeks for roughly 1,240 pages. This is where the cast expands sharply and where readers most often lose track of who is who. A slower pace with notes genuinely beats a fast pass here. Keep to one volume a sitting.
Volumes six and seven: the past comes up
About a week, but read these slower than anything else in the series. This is the densest material — the historical background to the whole story arrives in bulk, and if the setting is unfamiliar you will want two sittings per volume.
Volumes eight and nine: the ending
Roughly 880 pages, and if you can manage it, read them back to back in one long session of four or five hours. The split between the two is an artefact of the edition rather than the story, and the convergence loses real tension across a week-long gap.
Where to go next
Monster ends properly. There is no sequel, no continuation and nothing left hanging, which is rarer in long manga than it should be.
Two natural follow-ons are in this path. Pluto, Vol. 1 is an eight-volume science-fiction murder story that reworks a famous Astro Boy arc — our catalogue credits it to Osamu Tezuka, who created the original story, though the retelling is Urasawa's. It reads quickly. 20th Century Boys is much longer and much stranger, and it is the series Urasawa fans argue about most, largely because its ending divides people in a way Monster's does not. Sample volume one of each before committing to either. This stage is a decision, not an assignment.
More long-form comics and fiction paths are on Discover.
Follow the full ordered path here: Monster Reading Order and Reading Guide.