is a Japanese light novel series written by Yomu Mishima and illustrated by Nadare Takamine. It began serialization as a web novel published on the user-generated novel publishing website Shà Âsetsuka ni Narà  in August 2018. It was later acquired by Overlap who began publishing it under their Overlap Bunko light novel imprint in July 2020. A manga adaptation illustrated by Kai Nadashima began serialization on Overlap's Comic Gardo manga website in May 2021. An anime television series adaptation produced by Quad aired from April to June 2025.
A man has a horrible life due to his righteous and kind nature. He is also unfairly fired and blamed for things he did not do. A being known as the Guide offers to reincarnate him in a new world, so he may live as selfishly as he wishes. After the deal is made, the Guide is revealed to be evil, having amped up and manipulated everyone around him to make the man's life a living hell; even ruining his cheating wife's life as a coup de grace.
Things begin going haywire for the Guide, as the newly reborn Liam Banfield is living an incredibly good life as the Lord of his planet. His definition of evil is backwards to the new world and all his attempts to build his power to become a tyrant keep backfiring.
Written by Yomu Mishima, I'm the Evil Lord of an Intergalactic Empire! began serialization on the user-generated novel publishing site Shà Âsetsuka ni Narà  on August 15, 2018. It was later acquired by Overlap who began publishing it with illustrations by Nadare Takamine under their Overlap Bunko light novel imprint on July 25, 2020. Eleven volumes have been released as of July 2025. The light novel is licensed in North America by Seven Seas Entertainment.
Its spin-off began serialization on Shà Âsetsuka ni Narà  on November 16, 2021. It also was later acquired by Overlap who began publishing it with illustrations also by Nadare Takamine under Overlap Bunko on December 25, 2022. Five volumes have been released as of January 2026. The spin-off is also licensed in North America by Seven Seas Entertainment.
A manga adaptation illustrated by Kai Nadashima began serialization on Overlap's Comic Gardo manga website on May 29, 2021. The adaptation's chapters have been collected into nine volumes as of October 2025. The manga adaptation is also licensed in North America by Seven Seas Entertainment.
For its spin-off I'm the Heroic Knight of an Intergalactic Empire!, a manga adaptation illustrated Jà « Ishiguchi also began serialization on Comic Gardo on July 21, 2023. The first volume was published on December 25, 2023. The spin-off manga is also licensed in North America by Seven Seas Entertainment.
An anime television series adaptation was announced during the "5th Overlap Bunko All-Star Roundup Special" livestream on October 20, 2024. It is produced by Quad and directed by Tetsuya Yanagisawa, with scripts written by Katsuhiko Takayama, characters designed by Kazuya Morimae, and music composed by Yà «suke Seo and Shun Narita. The series aired from April 6 to June 22, 2025, on the Animazing!!! programming block on all ANN affiliates, including ABC Television and TV Asahi. The opening theme song is , performed by Saishà « Mirai Shà Âjo, while the ending theme song is , performed by Nagi Fujisaki. Crunchyroll streamed the series. Muse Communication licensed the series in Southeast Asia.