Inspired by the American series "Sliders" where one episode the characters enter a dimension where men are extinct and they are captured and forced to mate.
Based on a sci-fi erotic manga written by LINK and illustrated by Kotaro Shono. The first part of the manga was serialized in Shueisha's online magazine Shounen Jump+ from May 2016 to June 2020, while a second part, World's End Harem: After World, was serialized in the same platform from May 2021 to May 2023.
Episode 1 was streamed on Youtube on 25 September and aired on 8 October 2021 on TV as planned, but all later episodes were delayed until January 2022.
The series has inspired two additional manga series also written by LINK, titled World's End Harem: Fantasia and World's End Harem: Britannia Lumiére, respectively. Two audio dramas were released in May 2017 and August 2021.
A virtual reality game adaptation developed by DMM Games was released in March 2019.