what is shikigami in jujutsu kaisen

In the Jujutsu Kaisen universe, Shikigami are monstrous creatures that resemble cursed spirits and are conjured to serve as familiars for jujutsu users. They are created by the persons cursed energy and an intermediary, and the Ten Shadows Technique gives the user ten unique Shikigami. The Shikigami in Jujutsu Kaisen are the end results of the Ten Shadows Technique, and they stand out as the strongest so far. Each Shikigami has its unique abilities and strengths, and they can be ranked based on their power. The Shikigami may remain in a spiritual realm while they await commands from the Ten Shadows user.