No. 'Jujutsu Kaisen' is a work of fiction. It is created by Gege Akutami and is filled with fantastical elements such as cursed spirits, jujutsu sorcerers, and unique magical abilities that are not based on real - world events or people.
Jujutsu Kaisen is not based on a true story. It's a completely fictional work with its own unique plot and characters crafted by the creator's creativity.
The Jujutsu Kaisen manga has reached its conclusion. The story came to a close with a satisfying ending that wrapped up the plotlines and character developments.