Made in Abyss

A town is built around the edge of the Abyss, a vast hole of unknown depth containing relics of extraordinary value and creatures nobody has catalogued. Descending is survivable; ascending inflicts a curse that worsens with depth.

Riko, a twelve-year-old apprentice, descends with a robot boy to find her mother, knowing that beyond a certain layer the journey is one-way.

Going down is free. Coming back is what costs, and past a certain point it is not survivable at all.

Devmark’s reading — not a quotation from the book

Each layer has a defined ascension penalty — nausea, hallucination, haemorrhage, loss of humanity — and the rules are established early and applied without exception.

This is exceptional world-building. The one-way nature of the descent converts every decision into a commitment, and the tension comes from the map rather than from any antagonist.

The creature and relic designs are extraordinary: strange, functional, biologically plausible in an unfamiliar way, and rendered with enormous detail.

The Abyss itself is drawn as a genuine ecosystem with vertical strata, and the world-building is delivered almost entirely through imagery rather than explanation. He has also produced extensive supplementary material about the Abyss's ecology, and the world plainly exists in considerably more detail than the narrative requires.

The art style is soft and childlike, and the content includes mutilation, torture, bodily degradation and sustained suffering inflicted on children.

The contrast is deliberate and is the most divisive thing about the series. Some readers find it a powerful dissonance; others find it a poor excuse for the content.

The series contains graphic violence against children, nudity of child characters, urination and vomiting played for comedy, and an extended sequence of experimentation on children that is among the bleakest material in this section.

This is not incidental. Readers should decide in advance whether they want to read it, because the series will not moderate.

The Idofront sequence, concerning a researcher who performed experiments on children in pursuit of a discovery, is the series' most famous and most distressing material.

It is also its best-constructed arc, and the argument about what a person will justify in pursuit of knowledge is made seriously rather than for shock.

The series' actual subject is the drive to know, and it is consistently sceptical: every character who descends does so because they must, and the cost falls on other people as often as on themselves.

The Abyss is a good image for a research programme that nobody can stop because the next layer is always there.

The two children are drawn as genuinely children — frightened, resourceful, frequently wrong — and the series does not make them capable beyond their years.

Riko's determination is treated as the same drive the series is criticising elsewhere, which is a more honest position than the adventure framing suggests.

It is slow, with long stretches of travel, camping and description, and volumes appear at long intervals.

The slowness serves the descent. The layers need to feel large, and the series spends the pages required to make the depth register. Tsukushi also draws it himself at a high level of detail, which accounts for the intervals and for the consistency of the world's texture.

A character introduced in the fourth volume, the product of the layer five experiments, becomes the series' emotional centre and its most beloved creation.

The arc that introduces them is where the series' ambitions and its unpleasantness are most tightly bound together. Their design is also among the series' most distinctive, and their speech pattern carries a substantial amount of characterisation on its own.

An animated series and films cover the material closely, including the difficult sequences, and are visually faithful to Tsukushi's designs.

The animation does not soften anything, which is worth knowing for readers considering it as an alternative route in. It is also structured across a television series and films, which makes the viewing order slightly awkward for someone approaching it new.

Readers who want exceptional world-building and can tolerate genuinely distressing content involving children.

It is ongoing and its reputation is genuinely divided. The imaginative achievement is real and so are the objections, and readers should take both seriously rather than choosing one. A reasonable approach is to read the first three volumes and decide there, since the fourth is where the series' true register becomes unavoidable.