This world has a terrible curse people believe the life span is so short since the monster attack and war shorten peoples life span not many reach old age cause of too many people wanting to be adventurer, but yeah before Kenji's arival in the town of Rosaria its a famous city cause of hero Rosaria which is supposed to be the main adventurer city but it was over shadowed by the Glados kingdom which often held dungeon raid or Its tournament.
Human life expectancy is always under 50 or 60 if lucky some live until thousands if they pushed thier luck untill they become immortal beings.
But yeah diversity comes a lot of problem.
Kenji's family the Deledas some from a long line of heroes turn monarchy who stablished the Deledas empire.
Now lets tackle the Abyss Faction.
They are not demons nor ruled by the demon lord the demon lord system is long gone they are what the world caled the filth the one who eats world to gain power let's just say they're just pure evil they are like hmm how should i say this cancers they destroy one world and spread like disease.
The Dome that surround the city is infact an artificial sky cause the atmosphere was destroyed by the abyss faction, theres an elemental towers that power it well let's say mages are trap in there but yeah Astrea left her post cause yeah some one much powerfull is powering it.
Well now enjoy reading it cause yeah the author drank too much coffee and can't sleep let his work be seen