In the world of JJK, fans have seen some of the most incredible healers who make use of reverse cursed technique, among other things, to heal from injuries and recover in the face of danger. While Jujutsu Sorcery usually makes use of cursed energy, which is negative in nature, making use of positive energy helps a person heal and, in grave situations, this can be a deciding factor when it comes to who comes out on top in a battle.