Hi, this is Junko!
I’ll tell you what the word JUJUTSU KAISEN means in Japanese. Is it the same as its English title, Sorcery Fight? Let’s see it together!
JUJUTSU – curse spell
JU = curse
JUTSU = spell, technique, skill
JUJUTSU means an occult art for cursing someone in Japanese. In Jujutsu Kaisen English version, it’s translated as “Jujutsu sorcery”.
I think Jujutsu can be translated as “cursed technique”, but this word is used to refer to Jujutsushiki, abilities that are distinctive to each Jujutsu sorcerer.
Jujutsushiki is also called JUTSUSHIKI in the story. SHIKI means formula or style in Japanese and the word Jutsushiki makes meaning of a formula to use cursed energy.
KAI – rotate
This kanji letter means to rotate, move around.
The left part of the character stands for a long way and the right part does something rotating.
SEN – battle
SEN means a battle. This kanji frequently appears in manga and anime.
There’s no word of KAISEN with these kanji combinations in Japanese and I guess this is a coined word by the author. The meaning can be interpreted as “endless battles” or “long-continued battles”.
So the title Jujutsu Kaisen can be understood as “endless cursed technique battles” or something.
It may imply how long the battle between humans and cursed spirits. Or it’s the story that Itadori and his fellows put an end to the long-lasting battles against the curse.