is a Japanese manga series by Io Kaziwara. It is serialized digitally on the website ComicFesta since April 16, 2020. An anime adaptation was broadcast from October 2, 2021, to November 27, 2021, with a premium version for online streaming and a standard version for television broadcast.
The story begins with Toshiaki Gozu, a man who has fallen from society, dying and subsequently reincarnating as a background character in a fantasy video game that he was enamored with in his childhood. Gozu encounters a younger form of Evelogia, the last boss of the game and Gozu's favorite character. In the story, Eve begins his start of darkness by accidentally injuring the background character; however, Gozu alters the course of the story by confessing to Eve that he is in love with him. Together, Gozu and Eve set out to destroy the world and prevent the game's hero from defeating Eve.
Everything for Demon King Evelogia is written and illustrated by Io Kaziwara. It is serialized on the website ComicFesta under the Screamo label, as well as the mobile app , since April 16, 2020. The chapters have been released in eight bound volumes by Suiseisha under the Glanz BL Comics imprint. The manga is serialized in English by Coolmic in webtoon format under the title Reincarnated into Demon King Evelogia's World. On July 30, 2025, Seven Seas Entertainment announced that they would be releasing the series in print.
In 2021, Kaziwara stated through an interview with that she enjoyed creating the costumes for the series; however, due to the amount of artistic detail in the manga, she developed severe tendonitis while drawing the first volume. Regarding the second volume, Kaziwara mentioned that Panopia, the owner of the armor shop, became one of her favorite characters and that because he was the first dark-skinned character in her work, she felt his design was "fresh" and "fun to draw." Kaziwara stated that the dance scene was her favorite scene in the volume, as she had envisioned drawing a dance scene where two characters "hold hands and dance." As the characters received new outfits, Kaziwara stated she enjoyed designing them, but because she wasn't used to drawing them, she often missed details and colors. She stated that Gozu's new outfit was MacKiddie's in the original game. For the third volume, Kaziwara paid particular attention to Gozu's expressions. Her favorite and most difficult scene to draw was the dining hall scene due to amount of background characters.
On February 15, 2021, ComicFesta announced they were producing an anime adaptation of Everything for Demon King Evelogia. The anime adaptation is animated by Studio HÃ Âkiboshi. Two versions of the anime were produced: a standard version for television broadcast and a premium version including sexual content for streaming on AnimeFesta's website. The premium version was released on AnimeFesta's website from October 2, 2021, to November 27, 2021. The standard version was broadcast on Tokyo MX. Additional broadcasts include BS 11.
The cast from the audio drama adaptation, which had been bundled as an extra of the limited edition of the manga's first volume, reprised their roles. The anime adaptation is directed and written by Sanae Nagi, with ÃÂyo Kurosaki as an additional writer. Yà Âko Iwakura is in charge of character design. Iwakura, along with Nao Nakamoto, are in charge of animation direction. Ayako Misawa is in charge of music direction, with Black Flag producing the soundtrack. The theme song is "Change the World" by Shun Horie and Takuya Satà  as their characters.
On December 7, 2021, Ascendent Animation had licensed the anime adaptation. They also announced that they were producing an English-language dub. The English dub was released on Blu-ray and for streaming on Amazon Prime Video on October 24, 2022.