Sato Kisuke has one life left.
Four hours before Eternal Dominion goes dark forever, he enables Permadeath Mode for the bonuses. His party wipes on a boss they had no way to prepare for. He comes to on the floor of the same dungeon - hollowed, gasping, at one percent health.
The dungeon is not empty anymore.
The road south leads to a farming settlement being squeezed by a warlord who has been unusually lucky for a very long time, for reasons the people who live there have learned not to ask about.
Kisuke has spent ten years standing between other people and the things that would kill them. He has never done it at one percent, in a world where the corpses stay down.
He is going to have to make his own rules for this one.
Book 1 of The Demon Meat Shield - a dark fantasy isekai.