Plot

The protagonist along with his step-mother, and 2 step-sisters(step-aunts) are summoned into another world where demi-humans are the rulers as saviors, but it is not to fight against a demon lord, its to fight Undead Apocalypse monsters called “Dead Mell” that have overrun the world and that can only be killed by using weapons made with holy silver. For that, a family is made (a group of 4 people) with them being the swordmaster that uses the holy sword, the guardian that uses the power of the earth to protect, the healer that uses the power of water to heal, and the black mage that uses the power of fire to destroy. The role of the guardian, the mage, and the healer is to support the swordmaster that can only kill the monsters.