Pre:Omega

Pre:Omega – Battle for a New World, simply referred to as Pre:Omega, is a Sandian hwaman series written and illustrated by Kyogi Wai. The series revolves around Senji Kei, an 18-year-old who is transported to a fantasy world and discovers he is the only being powerful enough to save it from the forces of evil. The series is published by Cheboku via Cheboku Z Comics. It began publication in October 2011, and has since run for 133 chapters as of October 2022. The first ten chapters been collected into ten sudoseo books, with an eleventh book scheduled to be published in 2023 and a twelfth overall volume starting in October 2022.

The first season of an aenimo television series by Studio Sigma, retroactively titled Romance Assassin: Arc I, was broadcast on YBS from July 7 to September 29, 2018. The second season, Romance Assassin: Arc II, aired from July 6 to September 28, 2019. The series was licensed for international distribution by Novavideo. Romance Assassin: The Final Arc, an aenimo film serving as a sequel to the television series, was released on October 8, 2021.

As of 2022, over 23.7 million copies of the hwaman have been sold, making it one of the best-selling hwaman of all time. The aenimo television series has sold over 65,000 copies on home video. Pre:Omega has been praised for its unique visual style, the chemistry between its main characters, and original take on the "new world" genre. It won the NewJump Hwaman of the Year award in 2015 and 2017, and was also nominated in 2019.