Why it matters
It links anime and manga gothic adventure to steampunk-adjacent visual motifs: uniforms, occult machinery, artificial bodies and dark Victoriana.
Katsura Hoshino's D.Gray-man gives us exorcists, monstrous machines, Victorian gothic styling and the strong impression that the nineteenth century has developed a severe spiritual engineering problem.
D.Gray-man follows Allen Walker and the Black Order, exorcists fighting Akuma created by the Millennium Earl. The series combines religious imagery, body horror, gothic adventure, machine-monster designs and a late nineteenth-century atmosphere. It belongs to dark shonen fantasy first, but its visual and thematic overlap with steampunk is clear.
The Akuma are the strongest link. They are not ordinary demons. They are weaponised souls housed in mechanical bodies, which gives the series a grim fusion of the occult and the industrial. Steampunk and gaslamp fiction often love that border: machinery becoming haunted, faith becoming weaponised, science and sin sharing a workshop.
Allen's own body and weaponry deepen the connection. Like Fullmetal Alchemist, the series is interested in bodies altered by power and trauma. The machinery is not only external equipment. It presses into identity, injury and destiny. That gives the gothic styling some weight beneath the handsome coats.
The Victorian flavour is visual rather than historically exact. Uniforms, churches, travelling exorcists, old Europe, machinery and occult organisations create a gaslamp mood. It is not a careful alternate history, and it does not need to be. Its job is gothic atmosphere, moral melodrama and a world where machinery has learned to scream.
The series belongs near Fullmetal Alchemist because both manga use early-modern or industrial-era textures to tell stories about power, bodies and institutional violence. D.Gray-man is more overtly gothic and religious; Fullmetal Alchemist is more alchemical and military. Both are key borderland works for manga readers coming toward steampunk.
The Black Order gives the story its institutional shape. Like many gaslamp and gothic fantasies, D.Gray-man is fascinated by organisations that claim to fight darkness while developing their own unsettling habits. Uniforms, missions, laboratories and religious authority all make the world feel structured, even when the monsters are wonderfully excessive.
The Akuma designs keep the machine imagery from becoming polite. These are not charming clockwork companions. They are grief, manipulation and violence given engineered form. That makes the series darker than a simple exorcist adventure and more relevant to steampunk's interest in machinery as moral trouble.
Visually, the series has helped many readers connect gothic manga with the wider retro-mechanical field. The coats, crosses, gears, weapons and haunted machines may not add up to core steampunk, but they make the border visible.
Its audience overlaps with readers who like dark gaslamp fantasy, tragic monsters and religious organisations with more secrets than pastoral care. The series is stylish, but the style points toward grief and corruption rather than mere prettiness.
That is why the adjacency matters. D.Gray-man shows how steampunk imagery can be absorbed into gothic shonen: not as a historical argument, but as texture, machinery, costuming and moral atmosphere. It is a neighbouring workshop with the lights turned low.
Is it really steampunk?
Not strictly. D.Gray-man is gothic shonen manga with steampunk-adjacent design, machine-monster imagery and Victorian atmosphere. It should not be treated as core steampunk, but it sits comfortably in the gaslamp and dark retro-mechanical borderlands.
Readers interested in gothic machinery, occult organisations, altered bodies and dark anime/manga aesthetics should find it relevant. Readers looking for steam power and alternate industrial economics will need another platform.
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