Immortal, I Become Stronger by Spreading the Fire Liver Level

Traveling through the bizarre world, Morun becomes an immortal fire, and you can gain upgrade experience points by passing the fire. Undead believers can be made by spreading fire, believers can be made by burning corpses, believers can be made by burning animals, and exoskeleton armor can be made by burning steel? Since then, Morun has led the undead army onto the path of enterprise-level fire transmission. [Successful fire transmission, fire experience +5, fire residual temperature +3, believer +1...] Is there a god ahead? Families, grab the gods and use them as firewood, no, I mean pass the flames to the gods and let them join our big family!