i_un1t
This takes place during the post-culling game arc.
Where someone almost as special joins the team with Yuji Itadori and Megumi Fushiguro.
To keep it short, she's a teacher. She's a kicker. She's a first-grade sorcerer, going special grade later on. So, Instead of Hakari fighting Hajime Kashimo, the player with the one hundred points, it will be someone MUCH different that somewhat counters his technique overall. Her firework cursed energy clashing against Kashimos cursed energy will surely leave the audience with a lightshow later on.
They both do strike a deal with eachother in order for kashimo to get what he wants, but with an addition for something else he wants in return. A partner.
Partner in fighting, perhaps?
Or for life.
They will both live to fight sukuna together instead of alone. After a month long of spending time with eachother rather than spending who knows what with just hakari and kirara.
What could they possibly do in their spare time rather than fighting eachother every now and then? With all their time on their hands.
They come up with a strategy of their own to fight sukuna once kashimo warms up to Tsukihana later on.
All rights and property go to the inspired JJK/Jujutsu Kaisen manga and anime, including thr Author Gege Akutami and others that have made this.