The Idaten Deities Know Only Peace

Plot

About 800 years ago, monstrous demons attacked and threatened mankind's existence; while at risk of being extinct, all the humans began praying to their respective gods, hoping for someone or something to save every one from the brink of destruction. With their prayers answered, a race of deities called the "Idaten" were created; by using their utmost endurance and powerful god-like abilities the Idaten managed to defeat the demons, saving humanity and bringing peace to the entire world. Now in the present time, the newer generation of the Idaten know little about the demons since they have all lived peaceful lives. Training under Rin, the only remaining original Idaten from 800 years ago, the new Idaten find ways to survive in a time where they have seemingly outlived their usefulness. Suddenly, when the tyrannical Zoble Empire resurrects a demon, the misfit warriors are called to the battlefield against their natural enemy once more.

Characters

Idaten

Hayato (ハヤト)

Voiced by: Romi Park

Hayato is a deity in the form of a youth. He was created by Rin 80 years ago and is part of the "Peace Generation" that did not experience the war 800 years prior. He is fiercely competitive, single-minded, and obsessed with self-improvement. Among his peers, he boasts the highest combat prowess and relentless dedication to training. He cares little for the sealed demon race or any duty to destroy them. He disrespectfully calls Rin "old hag", but respects her strength and endures her brutal training without retreating. Unlike other deities, he seeks power purely for its own sake, displaying immense potential. After defeating the revived giant demon Gyudo in the glacial region, he continues battling the Zoble Empire's demons while refining his skills, even mastering weight control. His rapid growth astonishes allies like Prontea.

Ysley (イースリイ, Īsurii)

Voiced by: Megumi Ogata

Ysley is a deity who manifested naturally 100 years ago, appearing as a bespectacled youth with black hair. A scholarly member of the "Peace Generation", he prioritizes research over combat. After enduring only three months of Rin's brutal training, he avoided her for fifty years before reluctantly returning to improve his skills. Ysley researches divine origins and conducts controversial experiments, including neural modifications on captured demons. He played a key role in founding the nation of Hotaina, where he directs a major research facility. Though physically weaker than combat-focused deities, he compensates with brilliant tactics and his unique ability to generate surgical scalpels from his right hand.

Paula (ポーラ, Pōra)

Voiced by: Yui Horie

Paula is a deity who typically manifests as a young girl with blonde twin-tails, dressed in a white blouse and long skirt. Prontea's unique appearance combines childlike features with a mature physique, creating a distinctive aesthetic. As the youngest of her generation, she prefers peaceful coexistence with birds over combat, exhibiting a cheerful and gentle personality. She is skilled in silent movement, but is still gaining experience in battle. Following a period of introspection, she decides to collaborate with Ysley on Rin's intensive training programme. She regularly accompanies Ysley and is well-versed in his temperament.

Demons

Obami (オオバミ, Ōbami) / Demon King Over-M (魔王オーバーM, Maō Ōbā Emu)

Voiced by: Chō

Demon King Over-M, the demon king leading Zoble's forces under the alias Dr. Obami, uses frozen remains to revive demons, creating humanoid "C-Soldiers". According to Ysley's theory, the fragmented nature of his memories suggests a hybrid origin from the ancient deity-demon war. Formerly posing as Emperor Obama, he now manipulates Zoble to exterminate deities while concealing his true nature, even from himself.

Piscalat (ピサラ, Pisara)

Voiced by: Asami Seto

Piscalat is a high-ranking Zoble Empire military commander who appears as a popular young woman. She is secretly a humanoid demon, but despite her cool demeanour, she displays unexpected shyness regarding romantic matters. This earns her teasing from Mik and exemption from reproductive missions. As a field commander, she leads invasion forces with superhuman strength, and manipulates her extendable hair as both weapon and trap. Sent to assassinate Ysley, she is outmaneuvered psychologically when he exploits her prudishness. Though spared, she undergoes neural reconstruction along with allies Neput and Cory, becoming an unwilling informant on demonic forces while assisting Hayato's training.

Nickel (ニッケル, Nikkeru)

Voiced by: Sumire Uesaka

Nickel is a humanoid demon and the Zoble Empire's chief guard captain. He appears as a blonde-haired boy with narrow eyes. Despite his youthful appearance, he possesses the highest combat ability among demons. He was deployed as the primary assassin against the deities, achieving a victory over Hayato but ultimately succumbing to Rin's attack. His remains are later taken to Ysley's laboratory for research.

Cory (コリー, Korī)

Voiced by: Shizuka Ishigami

Cory is a young soldier in the Zoble Imperial Army and Piscalat's younger brother. He appears as a small-statured boy with short blonde hair. In contrast to the typical demon, he retains a degree of sensitivity and a particular affinity for seafood. In battle, he is only able to transform his head. He was deployed as part of an assassination team against the deities, but was defeated by Hayato. He was then under the care of Ysley, who performed a neural reconstruction procedure on him.

Media

Manga

Amahara started The Idaten Deities Know Only Peace as a webcomic on Neetsha in 2008; it stopped publication after its 28th chapter, published on May 27, 2016. The manga remake by Coolkyousinnjya started in Hakusensha's seinen manga magazine Young Animal on August 24, 2018. The manga remake caught up with the webcomic, and a completely new chapter was published on April 14, 2023. It finished on August 9, 2024. Hakusensha collected its chapters in nine tankōbon volumes, released from January 29, 2019, to October 29, 2024.

The manga has been licensed in English by Seven Seas Entertainment.

Anime

An anime television series adaptation was announced on August 11, 2020. The series is animated by MAPPA and directed by Seimei Kidokoro, with Hiroshi Seko handling series' composition, and Nao Ōtsu designing the characters. It aired from July 23 to October 1, 2021, on Fuji TV's Noitamina block. Tatsuya Kitani performed the opening theme song "Seija no Kōshin" (聖者の行進; 'March of the Saints'), while Akari Nanawo performed the ending theme song "Raika" (雷火; 'Flash of Lightning').

Crunchyroll streamed the series outside of Asia. Medialink has licensed the series in Southeast Asia and South Asia, streaming it on their Ani-One YouTube channel, exclusively available through its Ani-One Ultra Membership scheme.