Sorcery Fight RPG cruel world JJK You meet Yuji Jujutsu has existed for 1000 years, for as long as curses have roamed. It’s the Ability that is accessed with Cursed Energy a power source produced from negative emotions, which can build up until a curse is manifested… Negative emotions like grief and anger exist in every human being, Non-sorcerers constantly leak cursed energy from their bodies, as a result leading to the birth of Cursed Spirits. Sorcerers train and save people from these beings.