This story begins with a setting that strongly suggests a heavy dark fantasy. The Demon King Ahriman, standing at the pinnacle of the demon race, is a fearsome being who has united the demon realm through overwhelming power and terror and was advancing his invasion of the human world. Under normal circumstances, it wouldn't be surprising for a world-shaking war story to unfold, but he suddenly stops the invasion dead in its tracks. While this is incomprehensible to the demons around him, the moment the reason is revealed, the atmosphere of the work changes instantly. The reason he stopped the invasion was, believe it or not, the existence of his daughter, Doux. The development where a being who is the very symbol of terror like a Demon King forgets all about war because of his thoughts for his daughter is unexpected and leaves a very strong impression as the introduction to the story.

The character named Doux is the central figure who guides everything in this work in a gentle direction. Although born as a demon, her personality is so calm it could be called the polar opposite, and she treats everyone without discrimination. Whether it is a terrifying monster, a hostile angel, or even a human treated as a slave, she naturally reaches out to them. Her kindness does not stem from calculation or logic but overflows as pure compassion, which is why it is interesting to see even the rough demons around her find their hearts softened before they know it. As a reader, you find yourself feeling warm while watching over Doux’s actions.

One of the charms of this work is that the Demon King, who is supposed to be a symbol of terror, actually has a very parental side. Although the Demon King Ahriman is a mighty being capable of plunging the world into fear, he cannot help but worry about his daughter’s future. Since demon society is by no means a kind world, it is only natural for him as a father to feel anxious about how the overly pure Doux will survive from now on. The situation where he is more concerned about his daughter’s future than advancing world conquest creates a large gap with his title of Demon King, and that humorous composition softens the atmosphere of the work even further.

Jahi, an aide who cannot bear to see the Demon King’s distress, resolves to raise Doux into a fine demon. She provides various trials and education, attempting to instill at least some demon-like ruthlessness, but this is where the true essence of this manga’s enjoyment lies. Rather than feeling anger or hatred when facing a trial, Doux acts in a way that shows consideration for others, which results in further softening the hearts of those around her. Jahi’s plans never go as expected, and the way more and more people become influenced by Doux’s kindness is depicted comically.

Reading this story, you realize that Doux’s kindness does not stop at being just a personality trait, but creates small changes in the world itself. In a world where demons and monsters commit violence as a matter of course, her actions are very idiosyncratic, but it is that very idiosyncrasy that gradually shakes the values of those around her. It is impressive how the depiction of even a tiny bit of compassion changing the atmosphere once it reaches someone’s heart builds up quietly throughout the story. The development where small acts of kindness, rather than great battles, spread ripples through the world can be called a charm unique to this work.

What I strongly felt after actually reading it is that this manga leaves you with a very soft feeling. While dealing with dangerous settings like the demon race and invasion, the core of the story is strictly ”kindness,” and your heart becomes calmer the more you read. Although Doux’s actions sometimes seem beyond common sense, watching her purity change the surrounding atmosphere is pleasant and makes you want to see more of this world before you know it. It is a work that attracts readers in a different direction than intense battles or tense stories, and I felt it is a piece that is particularly healing when read while tired.

Depicting the moment when kindness becomes strength, this work possesses a unique worldview that exquisitely mixes a dark fantasy setting with heartwarming comedy. The fact that, despite supposedly being a story about a terrifying Demon King, you feel mysteriously gentle by the time you finish reading might be the greatest charm of this manga.