Clevatess, full title , 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 is also serialized on Media Factory's Comic Alive+ website since April 2024.
An anime television series adaptation produced by Lay-duce aired from July to September 2025. A second season premiered from July to September 2026.
Premise After defeating a group of heroes and destroying an entire kingdom as revenge for attacking his lands, one of the Four Beast Kings, Clevatess, takes in a baby belonging to the kingdom's royal family. He resurrects and enslaves a hero, Alicia Glenfall, so she can help him take care of the baby while hoping to examine humanity more closely. Before long, they find themselves at war against Vorden, another one of the Four Beast Kings.
Characters Main Characters
One of the thirteen heroes who is killed by Clevatess, but later revived to accompany him on a journey with Luna. She is technically an animated corpse who is bound to Clevatess by his dark magic, preventing her from disobeying him or being killed. She is later given the younger appearance of a Hidenian and uses the alias Alyssa Sleihunt during her time at Solsein. She is eventually turned into a mouse-like monster by Dean, but upon entering Vorden's domain, she returns to normal and reverts back into an adult and a human. However, after Klen is killed by Jazhak, she dies along with him.
One of the Four Beast Kings who rules the dark lands. He has grown interested in humanity after the heroes' failed attack. When adventuring, he disguises himself as "Klen", taking the appearance of a young boy (whose name is later revealed to be Shiro) who died while protecting Luna, though he is weaker in this form. His true form is a giant dark wolf with many tails. He is not all that ruthless as he has no interest in conquest, but will attack anyone who threatens him and his lands. He is currently the caretaker of Luna and master of Alicia and Nelluru, as well as Luna's magic instructor following Dorel's defeat. During his time at Solsein, he uses the alias Klen Vatiss. He is eventually killed by Jazhak, who takes his heart.
A baby who is the prince of the Haiden family, whom Clevatess, Alicia, and Nelluru take care of. Luna has a good influence on Klen as the baby’s presence is what keeps him from threatening humanity. It is later revealed that he is Toara's son and his real name is Toth. He is soon reunited with his mother. He soon develops the ability to speak and can use magical powers. In the future, sometime after Klen was murdered by Jazhak, he watches over the Dark Beasts in Klen's tower until Klen revives. /
A slave of the Crows. Born in a shaft as a slave child, she was protected by her mother until the latter disappeared when the former was 12. Since then, the bandits have been treating her cruelly as a way to relieve stress, and she has been beaten so much that she can only hear on one side, and her face and teeth are ruined, making it difficult to speak. While she was pregnant three times, all of them were stillborn. Because she produces breast milk, she cares for the babies that have been kidnapped. She later joins Klen after he resurrected her using the corpse of Broco's pet troll Betty, who devoured Nell under Broco's orders, giving her super strength. She now takes care of Luna.
Hiden
The unnamed ruler of Hiden, who is killed by Clevatess for launching an attack on his lands. He is later revived by Hiden's forge. After failing to convert Luna into the next heir using the forge, he drops himself into the forge as a final attempt to destroy Klen, which ends in failure. It is later revealed that Vorden was manipulating him.
Luna's birth mother and the princess of Hiden. She becomes Hiden's new regent after Dorel is killed and upon reuniting with her son.
A loyal Hidenian servant who works for Toara.
One of the thirteen heroes who is murdered by Clevatess. He was considered to be the strongest and the leader of the group.
One of the thirteen heroes who is murdered by Clevatess.
One of the thirteen heroes who is murdered by Clevatess.
One of the thirteen heroes who is murdered by Clevatess.
One of the thirteen heroes who is murdered by Clevatess.
One of the thirteen heroes who is murdered by Clevatess.
Alicia's father who was killed by Dorel when his daughter grew up. He and Dorel used to be partners. Alicia later avenges him.
The owner of an inn. She is Pito and Phil's mother, and Mark's wife.
Karl's husband, and Pito and Phil's father. Pito and Phil Karl and Mark's sons, who are distrustful of outsiders, but soon grow to respect Alicia.
Dark Beasts
The oldest and strongest of the Four Dark Beast Kings, who has ulterior motives and an obsession for the Hero Legend, which he seeks to recreate so he can destroy Toah. He is hunting for the Books of Toah and manipulates the King of Hiden, Dorel, Mirea's alternate persona, and several students from Solsein to do his dirty work. The other three Beast Kings are at war against him. Like Klen, he can take on a human form that came from the corpse of a hero that he defeated in the past, though otherwise, he has the appearance of a giant red dragon with six eyes. When disguised as a human, he uses the name "Vod". It is later revealed that his true goal is to revive his friend Write and finish his story, but was not aware that he was being manipulated. He is killed by a possessed Write.
Zavthier of Ghosts, or Zavthier of Mist is one of the Four Beast Kings, who opposes Vorden’s plans and works with Klen and Rathwell to stop him. She is an angel-like being with long blue-green hair, and uses Sarasa to communicate with others outside of her realm. She is the only Beast King that is female.
One of the Four Beast Kings, who uses Edison's body as a vessel. He is a tiny, blue, insect-like parasite, who always controls bodies as vessels. He too opposes Vorden’s plans and works with Klen and Zavthier to stop him. He helped Edison improve his ability to manipulate coal. One of his parasitic avatars is killed by a possessed Write.
A shapeshifting dark beast who serves Zavthier as a scout and spy.
Boelate
An antagonistic general who seeks to obtain arcanacites from the remains of Haiden for his kingdom Boelate. He is responsible for killing Alicia's father, whom he used to be partners with. He also possesses powerful magic and wields a Regalia sword. It is revealed that he is working for Vorden. He is soon killed by Alicia after she destroys his sword.
Drel's second-in-command. He can control an army of giant insects. He is eventually defeated by Alicia and was imprisoned for his crimes.
A wizard who serves Boelate. She can control magnetism and fly. She is later sent undercover as a teacher in Solsein. By this time, she is now terrified of Klen and Alicia. After her time in Solsein is over, she returned to Boelate to inform Beis of Toah.
The princess of Boelate. She is Beis's daughter. Dean, later revealed to be possessed by her alternate persona, swapped bodies with her and imprisoned her in the Mirror Labyrinth, though her original appearance remains the same while in the labyrinth. She and her alternate persona eventually became one.
The emperor of Boelate. He is Mirea's father, but does not know of his daughter is really imprisoned and impersonated by Dean, later revealed to have been used as a vessel by Mirea's alternate persona.
A hulking warrior and "hero slayer" who was the original leader of the Crows, and is now a prisoner who works for Beis. He is later sent to infiltrate Solsein; he does not disguise himself as a teacher or student and instead keeps his distance until the right time. He eventually escapes and murders Klen, taking his heart with him.
Eslinn
A general who is at war against Boelate. He can wield magic as well as fight. He is later sent undercover as a teacher in Solsein using the alias Matthew Barnes.
Rod's second-in-command. He also works undercover as a teacher at Solsein alongside Rod using the alias Teddy Swann.
The young king of Eslinn.
A sword saint who works for Uriel.
Solsein
A student who attends Solsein. He is calm in most situations and can use powerful magic. In the past, he became friends with Shiro. Once Ray learned of Shiro's death, he vowed to avenge him and kill Klen. However, following Vorden's defeat, he appeared to have given up revenge.
A student who attends Solsein. She can use magic and combat skills. Like Ray, she is calm in most situations.
A student who attends Solsein. He is also capable of using magic, but is also addicted to Vorden's power.
A student who attends Solsein. He is Leon's brother and they both specialize in magic. He and Leon are also very arrogant and hot-tempered.
A student who attends Solsein. He is Tigel's brother and they both specialize in magic. He and Tigel are also very arrogant and hot-tempered.
A student who attends Solsein. She resembles a little girl. She is revealed to be Orggite Shamaness Godspeaker, the next heir of the Orggites and is both a follower and vessel of Zavtheir. She visits an older Luna in the future.
A student who attends Solsein. He is actually a human vessel for the Demon Lord Rathwell. He can manipulate coal, which is amplified by Rathwell's powers. Rathwell eventually leaves him.
The chairman of Solsein, who is also the leader of a cult that serves Vorden. He swapped bodies with Mirea before trapping her in the Mirror Labyrinth. However, it is discovered that he has become a vessel to Mirea's alternate persona, who originated from the Mirror Labyrinth. He is eventually freed in the end.
A magic instructor from Solsein.
A student who attends Solsein. After being transformed into a dark beast and returned to normal by Mary Mary, he leaves the school.
A student who attends Solsein. She can use fire magic.
The boy who saved Luna and entrusted him to Klen before his death. Klen's human form resembles him. He and Ray knew each other in the past and became friends.
Other characters
The original Hero of Toah millennia ago, who caused the downfall of the Toah civilization as retribution for all the heroes they summoned from other worlds to slay Dark Beasts and enslave people, and Vorden's friend. He also killed himself after that and his body is kept in a shrine in the ruins of Toah. It was he who wrote the Books of Toah. Vorden now seeks to revive him and finish what he started. However, he is revived and possessed by the spirit of Toah, but is soon killed by Klen.
The ruthless leader of the Crows. He is killed by Alicia.
A woman who works at the Crows' headquarters.
Broco's pet troll. She is killed by Klen, who uses her corpse to revive Nelluru.
Dagan is a large and brutish member of the Crows. Fleeto A member of the Crows. He is blind, but has excellent hearing, touching, and smelling. He is killed by Alicia.
Media Manga Written and illustrated by Yūji Iwahara, Clevatess started on the Line Manga digital platform on August 12, 2020, with the first collected volume published on the same day; the thirteenth and latest volume was released digitally on July 8, 2026. The manga has also been published on Media Factory's Comic Alive+ website since April 24, 2024, as well as Webtoon since March 23, 2025. A new edition of compiled volumes started with the first and second volumes on July 5, 2024, followed by the third volume on August 28, then the fourth volume on September 28.
In February 2026, Yen Press announced that they had licensed the series for English publication, with the first volume set to release in August later in the year.
Anime