>>713451009
>monster finds some unattended baby/retiree and genocides the humans
monsters are canonically embedded to be good people at heart and wouldnt do that

the war probably went
>anyone who isnt asgore or gerson level gets wrecked instantly
>asgore and gerson (who undyne looks up to and calls the toughest monster who ever lived) can merely SURVIVE fighting humans
>"oh fuck lets surrender"