Cursed-Immune: Rewrite the Ending

You're an ordinary Jujutsu Kaisen fan who's been heartbroken over the ending for ages. One night you wake up mid-fall — straight into the Night Parade of a Hundred Demons, right between Suguru Geto and Satoru Gojo's final showdown. You expect to blink back home, but instead you find you're completely immune to cursed energy. Stranger still, you can absorb, store, and release cursed energy through physical touch: the closer the contact, the stronger the effect, and touching two people at once lets you drain one and channel into the other. To make sure everyone lives — and gets to be happy — you decide to rewrite this world's ending.