The world is full of magical essence. There are 3 types of magical essence:
1. Mana: It is the magical essence that makes everything magical. Everything and every living being (with the sole exception of Arreck ofc) has mana in them. Mana is the magical essence that is used for casting spells and controlling one's elemental affinities.
2. CursedEnergy: This type of essence is rare. This type of magical essence is used by demons or evil beings ( such as orcs). Humans with demon blood (hybrids) can also use cursed energy. It works like mana, but it is just more powerful and mischievous. Cursed energy can also place curses on things and beings.
3. Divine Energy: This type of magical essence is much rarer than cursed energy. It is the opposite of cursed energy. While cursed energy can place curses, divine energy can nullify curses. Although it can't nullify the spells cast with cursed energy, specific spells cast with divine energy can create a barrier that can repel cursed spells.
Note: "I am not trying to copy Jujutsu Kaisen."