Any quick transmigration novels you know of with a primitive/beastman/apocalyptic world arc? Man x man preferred, but any good novels will work
It’s Actually Not Easy Wanting to be a Supporting Male Lead - Arc 1 (Beastman) As the Minor Gay Rival in Het Novels - Arc 7 (Apocalypse) Quickly wear the Face Of the Devil - Arc 9 (Apocalypse), Extra 4 (Beastman/Primitive) Don't Pick Up Boyfriends From the Trash Bin - Arc 6 (Apocalypse)