The Chosen Gods must Die

What happens when the Isekia'd protagonist fails? Then, what happens when ten of them die to the final boss? What happens when a hundred stories end on the doorsteps to the final level? What happens if the Chosen heros are nothing but tools to use against a people that wish for nothing but peace? What if the final boss wishes for nothing more but to kill the Gods themselves, for using children from another world in their war against him?