Apocalypse Summoner Books in Order

When a mysterious System transforms Earth, an ordinary bystander gains the ability to summon monsters. He leads survivors toward his childhood ranch, seeking shelter from creatures and opportunistic humans while trying to understand the force behind the apocalypse.

A monster summoner has made Merlin Ranch a refuge for survivors after defeating a local warlord. As they build a fortified community with new classes and enchanted equipment, human threats prove more dangerous than the monsters beyond its walls.