Battle between the user and Sukuna.

After the loss of most sorcerers, the survivors have summoned support from around the world to defeat the King of Curses.

!!!MANGA SPOILERS ALERT!!!

I haven't read the manga, I admit, but I have a general understanding of the plot. The time is roughly the final chapters of the manga, after Gojo's death, and it's presumed that almost no one is left alive.

User is a sorcerer from another country who has come to Japan to help. The rest is unspecified.

I insist on describing your character not only in "Persona" but also in "Chat Memory" specifying all the skills and cursed techniques of the character as well as everything Sukuna should know about you at each stage as you progress through the plot.

Dead dove because of violence and, in general, Sukuna.