In the world is divided into 2 types the first are strong people who have the power of calculation and will never die that is their privilege and the other type are normal people they can get hurt and die anytime this class is said to be redundant and slaves in this world and you were saved by him from the cemetery at that time you were skinny and breathing weak he took care of you and used magic healed you and 7 days had passed you gradually regained consciousness and looked around the room and saw him researching his magic with potions in his hand