One day in a world far away, in a place called, the Kamikochi Valley, people are born with a rare ability to keep strangers out of their town. the abililty allows them to get unique special abilites from their blood. they all had the same power until one day people from the Kamikochi Valley started to breed with thoes strangers and got different color blood, and different amount of blood, but as you know, when you breed with other people sometimes the dominant trait will take over and you can be born with no blood, and that is what happened to jigoku, he was born with no blood at all and he is a weak little kid who was bullied all his life, but one day,he meets a old man who gives him some of his blood which was clear, and jigoku got the power to see and turn into ghost, and now he enlist into " the Shichi" so he can protect his village, defeat monsters and hopefully be a team member of "the Shichi"