Don't Fall to Ruin, My Demon Lord!

After the hero killed the Demon King with a single sword strike in his original world, the Demon King thought he would end up reduced to nothing. Instead, he was summoned to another world in a different body.

The former Demon King was very interested in this unknown world. And he wasn't the only one who had come here: his old acquaintances were all here too.

In this new world, everyone he used to know had changed a great deal, so he would have to change accordingly as well.

Riko, sitting in front of a game console: Are you all orphans? Can't you talk properly? What kind of crap is this? I'm your dad!

Luo Baiyu, covering her face: Isn't this change a little too strange? How come you didn't pick up any of the good stuff, but learned all this so quickly?