[Anime Crossover] + [Behind the Scenes] + [No Female Lead] + [Myriad Heavens Shop] + [Main God Space] + [Making Up for Regrets]
Gu Bai, hunted by the Main God Space, escaped under the cover of the System's self-destruction. To get revenge, he decided to build a force capable of standing against the Main God Space. He opens the door to one Anime Crossover world after another and invites their inhabitants to become his employees.
Demon Slayer world: Muzan, if you can't take care of your own employees, I'll just spirit away Michikatsu Tsugikuni, Hakuji, and Gyutaro. And you, you useless boss, can become my slave! Hahahaha!
Ajin world: Michikatsu Tsugikuni takes on Sato's Ajin organization alone and captures Sato to use as expendable material. The immortal Ajin bloodline can greatly boost the employees' endurance.
Ling Long world: Michikatsu Tsugikuni, enhanced, and Bai Yuekui take on the entire Mana ecosystem, moving all the remaining survivors to the Myriad Heavens Shop.
Frieren world: Frieren refuses to resurrect Himmel. But in the distant Fox Spirit world, there's a tree that can bind your fate to Himmel's again through reincarnation.
