Kyuuseishu «Messiah» ~ Isekai wo Sukutta Motoyuusha ga Mamono no Afureru Genjitsu Sekai wo Musou suru - Ch. 37 - Matters Concerning That Day

[DarkMatter77]

I wonder what's the endgame for the demons? And what about the other kingdoms? There was no mention of them having their own heroes so I doubt the demons stopped just there.

Invade the world the hero comes from?

This seems to be a very dark twist on the isekai genre

Hero gets isekai to fight the demon lord

In this case, he kills the demon lord. But a new one wins and takes over

The new one then lead her forces in invading the world the hero comes from. If this is the case, the it shows the hero that even his world wasn’t safe