Three Boys Reborn TBR

First of all, a world of gods, angels demons and clans of difference in particularities, 3 boys have no clan and were sent to the world of mortals (Earth), to have a home. The boys from birth were in danger of being killed, and their Father Kross Fight decided to sell himself so that they would be safe during the years when they were children. They grow little by little with a partner by their side willing to fight, but although they already have their own conscience they do not know that they are trapped in different dimensions, and their lives are still in danger because enemies come to attack them. Will the Boys survive?

Three Boys Reborn - Umarekawaru san'nin no shōnen