Who is sukuna

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Last updated: April 8, 2026

Quick Answer: Sukuna is the primary antagonist in the manga and anime series Jujutsu Kaisen, created by Gege Akutami. He is a legendary cursed spirit from the Heian period (794-1185 CE) who was known as the "King of Curses" and was feared by jujutsu sorcerers. In the series, he exists as 20 indestructible fingers that contain his power and currently resides as a cursed object within the protagonist Yuji Itadori.

Key Facts

Sukuna is a legendary cursed spirit from Japan's Heian period (794-1185 CE)
He is known as the "King of Curses" and was feared by jujutsu sorcerers
Sukuna exists as 20 indestructible fingers that contain his power
He currently resides as a cursed object within protagonist Yuji Itadori
Sukuna is the primary antagonist in the manga/anime series Jujutsu Kaisen created by Gege Akutami

Overview

Sukuna is the primary antagonist in the immensely popular manga and anime series Jujutsu Kaisen, created by mangaka Gege Akutami. The series began serialization in Weekly Shonen Jump in March 2018 and has since become one of the most successful manga of the 2020s, with over 90 million copies in circulation as of 2024. Sukuna serves as the central opposing force to the protagonist Yuji Itadori and represents the ultimate threat in the world of jujutsu sorcery.

Historically, Sukuna is based on a legendary figure from Japanese folklore who appears in the Nihon Shoki (Chronicles of Japan), one of Japan's oldest historical texts completed in 720 CE. In the series, he is reimagined as a powerful cursed spirit from the Heian period (794-1185 CE), a golden age for jujutsu sorcery. During this era, Sukuna was known as the "King of Curses" and was so feared that jujutsu sorcerers could not defeat him, instead sealing his power into 20 indestructible fingers.

How It Works

Sukuna's existence and power system operate through several key mechanisms within the Jujutsu Kaisen universe.

Key Point 1: The 20 Fingers System: Sukuna's power was divided and sealed into 20 special-grade cursed objects that take the form of fingers. Each finger contains a portion of his immense cursed energy, and consuming one grants the user access to that power. As of the manga's current events, Yuji Itadori has consumed 15 of these fingers, with the remaining 5 still unaccounted for in the story.
Key Point 2: Vessel Dynamics: Sukuna requires a living vessel to manifest physically in the world. After Yuji Itadori consumed the first finger in October 2018 (in-series timeline), Sukuna established a binding vow that allows him to take control of Yuji's body for one minute whenever Yuji says "enchain." This creates a complex dynamic where Sukuna can temporarily override Yuji's consciousness.
Key Point 3: Domain Expansion - Malevolent Shrine: Sukuna's most powerful technique is his Domain Expansion called "Malevolent Shrine" (Fukuma Mizushi). Unlike typical domains that create enclosed barrier spaces, Sukuna's domain has a massive radius of approximately 200 meters and doesn't require a barrier, making it exceptionally difficult to counter. Within this domain, his slashing attacks become guaranteed hits.
Key Point 4: Cursed Technique Replication: Sukuna possesses the unique ability to replicate and master cursed techniques he observes. This was demonstrated when he copied Megumi Fushiguro's Ten Shadows Technique after seeing it only once. This ability makes him particularly dangerous as he can adapt to and counter any jujutsu technique he encounters.

Key Comparisons

Feature	Sukuna (Jujutsu Kaisen)	Traditional Japanese Sukuna
Historical Origin	Heian period cursed spirit (794-1185 CE)	Mythological figure in Nihon Shoki (720 CE)
Physical Form	20 indestructible fingers as cursed objects	Described as having two faces and four arms
Power Level	Special Grade cursed spirit, "King of Curses"	Local deity/demon defeated by Yamato Takeru
Modern Adaptation	Primary antagonist in 2018+ manga/anime	Historical/mythological figure in texts
Defeat Method	Sealed into fingers by Heian era sorcerers	Defeated by imperial prince in legend

Why It Matters

Impact 1: Narrative Driving Force: Sukuna serves as the central conflict driver in Jujutsu Kaisen, with the entire plot revolving around Yuji's mission to consume all 20 fingers and then be executed to eliminate Sukuna permanently. This creates constant tension as each finger consumed increases Sukuna's influence over Yuji while making Yuji harder to kill.
Impact 2: Cultural Bridge: The character creates a connection between modern shonen manga and traditional Japanese folklore, introducing international audiences to Heian period mythology. The series has sold over 90 million copies worldwide as of 2024, spreading awareness of these cultural elements globally.
Impact 3: Power System Innovation: Sukuna's unique abilities, particularly his barrier-less Domain Expansion and technique replication, have expanded the possibilities within battle shonen manga. His 20-finger power scaling system provides clear progression markers that have influenced how power levels are depicted in contemporary manga.

Sukuna represents one of the most compelling antagonists in modern shonen manga, blending traditional Japanese mythology with innovative storytelling mechanics. As Jujutsu Kaisen continues toward its conclusion, Sukuna's ultimate fate and the resolution of his conflict with Yuji Itadori will likely have lasting impact on the manga industry. The character has already inspired numerous analyses, fan theories, and discussions about the nature of evil in shonen narratives, ensuring his legacy will extend beyond the series itself. With the anime adaptation continuing to introduce Sukuna to new audiences, his influence as a cultural icon is only beginning to be fully realized.