Clevatess: Majū no Ō to Akago to Shikabane no Yūsha (クレバテス−魔獣の王と赤子と屍の勇者−), also known as Clevatess: The King of Magical Beasts, the Baby, and the Corpse Hero, is a Japanese manga series written and illustrated by Yūji Iwahara. It began serialization on Line Digital Frontier’s Line Manga service in August 2020 and later appeared on Media Factory’s Comic Alive+ website from April 2024. The story blends dark fantasy, character-driven drama, and moral exploration, offering an emotional yet action-packed journey.
In July 2025, the series received an anime adaptation by Lay-duce, directed by Kiyotaka Taguchi, with series composition by Keigo Koyanagi and music by Nobuaki Nobusawa. The adaptation quickly gained attention for its unique premise, striking visuals, and a morally complex central dynamic between its main characters.
Clevatess – Official Trailer
What Is Clevatess About?
The series follows Clevatess, the Demon King who destroys a human kingdom after it invades his lands. Amid the chaos, he unexpectedly adopts Luna, a baby from the royal family, and resurrects one of the fallen heroes, Alicia, forcing her into servitude to help care for the child.
While initially driven by vengeance and curiosity about humanity, Clevatess begins to change as he travels with Luna and Alicia, exploring a world full of humans, magical beasts, and dangerous politics.
The story focuses on themes of:
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Revenge and redemption
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Moral ambiguity and personal growth
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Unlikely bonds between enemies
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The blurred lines between hero and villain
Main Characters
Clevatess / Clen – A powerful Demon King who has no ambitions of conquest but will destroy anyone threatening him or his domain. Disguises himself as a young boy named Clen when traveling.
Alicia – One of the thirteen heroes sent to kill Clevatess. After her death, she is resurrected as an undead and bound to serve him. Despite her circumstances, she still carries a sense of justice.
Luna – The infant prince of the fallen Haiden kingdom. Her innocence and presence begin to soften Clevatess’s harsh demeanor.
Nelluru – A former slave of the Crows with a tragic past, later joining Clevatess’s group.
Additional characters include The King of Haiden, Stefan, Mirlo, Holgas, Katz, and other members of the thirteen heroes, as well as various allies and antagonists introduced throughout the journey.
Seasons and Episodes
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Season 1 – Premiered July 2, 2025 – currently airing, produced by Lay-duce, streamed on Crunchyroll and Ani-One Asia.
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Future seasons have not yet been confirmed, but the manga provides plenty of material for continuation.
Is Clevatess Worth Watching?
Yes — if you enjoy dark fantasy stories that mix action, emotional depth, and morally complex characters, Clevatess stands out as a fresh entry in the genre.
The series offers:
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A unique twist on the “hero vs demon king” trope
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Rich world-building with multiple factions and political intrigue
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Strong character development, especially for Clevatess and Alicia
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A balance between intense combat and heartfelt moments
Watch Order for Clevatess
Since the anime adaptation is still in early stages, the current watch order is straightforward:
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Clevatess: Majū no Ō to Akago to Shikabane no Yūsha – Season 1 (2025)
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Read the manga for the full ongoing story and additional world-building.
Frequently Asked Questions About Clevatess
1. What genre is Clevatess?
It is a dark fantasy series with action, drama, and emotional themes.
2. Is Clevatess based on a novel?
No, it is based on the original manga by Yūji Iwahara.
3. Who animates Clevatess?
The anime adaptation is produced by Lay-duce.
4. Where can I watch Clevatess?
It is available on Crunchyroll worldwide and Ani-One Asia on YouTube for select regions.
5. How faithful is the anime to the manga?
So far, it closely follows the source material, adapting early manga arcs with minimal changes.
6. Will there be more seasons?
No official confirmation yet, but the manga has enough content for multiple seasons.
Conclusion
Clevatess takes the familiar setup of a demon king and heroes but flips it on its head, turning enemies into reluctant companions bound by circumstance. With a morally complex lead, an emotional core in the form of baby Luna, and a blend of dark world-building and tender moments, the series has quickly attracted a dedicated following.
Whether you’re reading the manga or watching the anime, Clevatess offers a unique and compelling journey that challenges traditional fantasy storytelling.
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