Ragna Crimson

Ragna Crimson Review

by Daiki Kobayashi

★★★★OngoingT (Teen)
Reviewed by Yu

Read the first volume. If it doesn't hook you, put it down. It'll hook you.

Buy Ragna Crimson on Amazon →

*Affiliate link — I earn a small commission at no extra cost to you.

Quick Take

  • A weak dragon slayer teams up with a mysterious warrior from the future to kill gods
  • Starts slow but evolves into one of the most ambitious action manga in recent years
  • Crimson is one of manga's most compelling antiheroes — dark, driven, morally complex

Who Is This Manga For?

  • Fans of ambitious dark fantasy action
  • Readers who want morally complex protagonists in their action manga
  • Anyone who stuck through Berserk — similar 'underdog faces impossible odds' energy
  • Manga readers who want an ongoing series with high power-fantasy satisfaction

Content Warnings & Age Rating

Age Rating: T (Teen) Content Warnings: violence, dark themes

Please check these warnings before reading.

Yu's Rating

Category Score
Story Depth ★★★★☆
Art Style ★★★★☆
Character Development ★★★★☆
Accessibility for Non-Japanese Readers ★★★☆☆
Reread Value ★★★★☆

Story Overview

Ragna is a weak dragon slayer who barely survives each hunt, but possesses an extraordinary ability to learn from stronger fighters. His partner Leonica, a prodigy dragon slayer, is fated to die. Then Crimson appears — a warrior from a future where dragons have won, who has returned to the past to ensure a different outcome. Crimson is ruthlessly powerful and has already decided the outcome: the gods of dragons must die. Ragna, caught up in this scheme, must grow into someone capable of fighting beside Crimson.

Characters

Ragna starts as seemingly ordinary and slowly reveals depths. Crimson is the series' real standout — cold, powerful, operating on a different moral calculus from typical heroes, with a backstory that makes his ruthlessness understandable and tragic. Leonica is a strong female character whose presence drives Ragna's motivation.

Art Style

Kobayashi's art is detailed and dynamic. The dragon designs are memorable — genuinely alien rather than standard fantasy dragons. Action sequences are well-composed and scale from intimate sword fights to god-level destruction as the series progresses.

Cultural Context

Ragna Crimson exists in a tradition of 'monster hunter' manga, but escalates the premise toward cosmic conflict. The gods of dragons draw from various mythological traditions filtered through Kobayashi's imagination. The time-travel element is used sparingly but effectively.

What I Love About It

I didn't expect to love Ragna Crimson as much as I did. The first few volumes felt like setup, competent but not exceptional. Then Crimson's full backstory revealed itself, and the series transformed. A character who has already lived through the apocalypse, who knows exactly what's at stake, who has sacrificed everything — watching him navigate the past with this burden is genuinely affecting.

What English-Speaking Fans Say

International readers often recommend pushing through the early volumes, with the payoff in the mid-series being praised as exceptional. The anime adaptation helped draw new readers. Crimson is consistently cited as one of the best characters in recent action manga.

Memorable Scene ⚠️ Spoiler Warning

Spoiler Warning: Crimson's full backstory — what the future looked like before he went back — lands with devastating impact. The cost of his mission, and what he gave up, makes every subsequent action scene feel weightier.

Similar Manga

  • Goblin Slayer — Dark fantasy monster hunting with serious tone
  • Claymore — Female warriors hunting supernatural creatures — classic
  • Berserk — The ultimate dark fantasy action — if you want more, start here

Reading Order / Where to Start

Start from Volume 1. Push through early volumes — the series rewards patience.

Official English Translation Status

Status: Ongoing Publisher: Square Enix Manga Volumes Available in English: 10 of 15

Pros & Cons

Pros:

  • Crimson is an exceptional character
  • Escalates ambitiously
  • Dragon designs are creative
  • Time-travel mechanic used well

Cons:

  • Slow early volumes
  • Power levels escalate rapidly — keep up
  • Ongoing — waiting for new volumes

Format Comparison

Format Link Notes
Paperback Amazon Square Enix Manga edition

Where to Buy

Read the first volume. If it doesn't hook you, put it down. It'll hook you.

Start with Volume 1 →


This post contains affiliate links. If you purchase through these links, I may earn a small commission at no extra cost to you. As an Amazon Associate, I earn from qualifying purchases.

Buy Ragna Crimson on Amazon →

*Affiliate link — I earn a small commission at no extra cost to you.

More Manga You Might Like

Hell's Paradise: Jigokuraku

Action / Dark Fantasy

Hell's Paradise: Jigokuraku

Gabimaru the Hollow is a legendary Iwagakure shinobi awaiting execution. The Edo period government offers him a deal: travel to a mysterious island in search of the elixir of immortality, and earn his freedom. The island is paradise. The island is also hell. Yuji Kaku's 13-volume manga ran 2018–2021 in Shonen Jump+, with a 2023 MAPPA anime adaptation and 2026 second season. Complete in English from VIZ.

Claymore

Action / Dark Fantasy

Claymore

Yu's review of Claymore — half-human, half-Yoma warriors called Claymores hunt the shape-shifting demons that prey on humanity, struggling against the monster within themselves as much as the ones outside.

Attack on Titan

Action / Dark Fantasy

Attack on Titan

Yu's review of Attack on Titan — a manga that starts as a monster story behind three walls and ends as a story about inherited hatred, genocide, and one boy who tried to drown the world. Brutal, brilliant, unforgettable.

Gachiakuta

Action

Gachiakuta

A review of Gachiakuta — the shonen manga about a boy thrown into a garbage underworld who discovers the power to weaponize discarded things.

Dororo

Action / Historical

Dororo

Yu's review of Dororo — a 4-volume Osamu Tezuka classic about a boy whose body was traded to 48 demons before birth, now fighting to reclaim his parts. Dark, strange, and essential reading from the God of Manga.

Dogs: Bullets & Carnage

Action

Dogs: Bullets & Carnage

Yu's review of Dogs: Bullets & Carnage — four individuals with violent pasts navigate an underground city built on human experimentation; Heine is a modified human who heals from anything; Badou is a chain-smoking information broker; their paths converge in the depths below the city; Shirow Miwa's action manga about the price of survival.

Y

Written by

Yu

Manga Enthusiast from Japan

I grew up in Japan and manga literally saved me during a tough time in elementary school. My English isn't perfect, but my love for manga is real — and I want to share it with you.

Disclosure: This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.