In this world, there are two types of people, Those who have been summoned from another world, and those who are native.

Jack is hardworking farmer. He has a loving wife and a daughter.
He is happy... Until things fall apart.

He comes home to find his beloved family dead, right behind an unlocked door that he left wide open, for people who he thought he trusted, the otherworlders.

Swearing revenge, he goes on the rampage, making friends and enemies along the way. He makes promises that he