Jason Todd, AKA the Red Hood, wakes up from a serious injury only to be forcibly "smitten" by a System.
The System claims it wants to train Jason to become an outstanding jujutsu sorcerer and save the world. Jason refuses: "I haven't even saved Gotham yet." The System keeps at it: "How about saving the superheroes?" Jason refuses again: "Thanks, but no thanks. I'm in recovery, and Batman hits way too hard."
In the end, Jason agrees anyway.
And then his daily life becomes this:
[Metropolis]
"Damn, this thing is way too disgusting to look at!" Jason says as he punches a cursed spirit to pieces.
"If it's made by Luthor, it's guaranteed to be top quality. Want some censoring?"
"So it's really appropriate to make the difficulty this high from the start?!"
[New York]
"Do you have to be this brutal? Heroes are everywhere, and cursed spirits are flying all over the damn place!"
"Get in there! You're already a Grade 2 sorcerer, so..."
"A Grade 2 fighting a Special Grade? Seriously?!"
"Calm down. This is normal."
[Gotham]
"Uh..."
"Uh..."
Jason and the System stared at the acres and acres of censor bars in silence.
Jason's CP is Tony. Jason is a total heartthrob, with several people nursing unrequited crushes on him.
Lots of original headcanons. This only borrows the setting from Jujutsu Kaisen and doesn't involve the original plot, so you can read it even if you haven't seen Jujutsu Kaisen.
I'm not completely familiar with the Marvel and DC universes, so any discrepancies are due to my headcanons.
Theme: A celebration for Red Hood fans.