Ryomen Sukuna is a fictional character from the manga and anime series Jujutsu Kaisen, created by Gege Akutami. He is depicted as a powerful cursed spirit and is known as the "King of Curses." Sukuna originally lived as a human during the Heian period and was feared for his immense strength and malevolence. After his death, his spirit became a curse that terrorizes the living. In the series, Ryomen Sukuna is often associated with the protagonist, Yuji Itadori, as Yuji consumes one of Sukuna's fingers, which contain his cursed energy. This act allows Sukuna to temporarily take control of Yuji's body, leading to intense battles against other curses and sorcerers. Sukuna's character embodies themes of power, fear, and the struggle between good and evil.