Many cursed tools carry cursed energy themselves, so when used, they can heighten the holder's own abilities. For example, Playful Cloud allowed Maki Zenin, a girl with no cursed energy, to ...

Jujutsu sorcerers protect non-sorcerers, while curse users intentionally harm others. Jujutsu sorcery started as a way to control cursed energy and kill curses in early human history.