What’s the most personalised hell for sukuna you could come up with that produces character development?
Cus now I’m wondering if there is a way to make him face himself that ISN’T defeat/death. Or at least a permanent one that erases his memory and whatnot. Cus a forced time loop is something too. Also an idea explored in asura’s penance by asteriacrows if that’s interesting to you. Plot summary below:
(sukuna gets striped of his autonomy and free will and forcefully relives his choices leading to his death at yujis hands up to 20 times as penance except he can’t indulge in eating (taste), sleep (rest), or intrigue (nothing new to him) anymore. For a self sufficient warrior hedonist it’s horrible.
Also interesting plot line and missing information that’s slowly revealed about the 19th cycle which changed the rules of the penance to give sukuna more freedom in mysterious ways. Other major characters in the story [Gojo, yuji, Megumi, Mahito so far] are affected by the time loop as well, but only yuji is aware of it out of the 4 due to supernatural consequence of sharing a body with sukuna. The big question is what comes of sukuna once the 20 cycles of being fates puppet ends.)
I mean go wild with the ideas. Introduce a new Jujustu concept or take inspiration from spiritual theology about whatever. What do you think would make sukuna’s skin crawl to his core?
your ask came at the perfect time anon because i've been contemplating this exact thing for like a week lol.
the genuine simplest and most effective answer is just to take away his ability to kill people. whether by binding vow or CE confiscation or whatever, just make him unable to cut down all his problems. the brainworms would genuinely eat him alive.
what would make sukuna's skin crawl to his core? having to live as a human.
when sukuna says that he couldn't help but spit out the curses stirring in his viscera, lest he be immolated by his own curse, what he means to say is that if he didn't turn all of his hatred and pain externally, then he would turn it internally and die from his own curse. Basically, if he didn't kill other people, it would've been himself— there's no other way to cope.
in the yuki and choso vs kenjaku fight (forgive me for not remembering the chapter), choso asks yuki if he's even human. he willingly chose to live as a curse because he knew his brothers would never be accepted in human society for their deformities, only to realize that this was actually the easy way out and that he was forsaking meaningful relationships with humans (yuji) because of it. it's the easy way out because he could've fought for his brothers and tried to carve out a space for them in society, but instead decided to give up before even trying.
now is this not literally sukuna? choosing to live as a curse because his deformities wouldn't allow him to be accepted in human society, choosing the "easy way out" of burning everything around him rather than face his own curse.
which is why I think forcing him to live as a human would make him sick to his core. without an outlet to burn everything around him, it will inevitably turn inwards, just as he said. he WILL be immolated by his own curse. trying to live a normal day-to-day life, even without the social stigma around him, is already difficult enough as it is. he exists in a world that is not designed to accommodate him at all. on top of that, he is dehumanized in some way or form by the people around him— if not as a curse, then as a monster, if not as a monster then as a criminal who should hold no rights in society, if not a criminal then a tool to be exploited, if not as a tool then a freak to be gawked at, if not a freak then a specimen whose anatomy needs to be studied for sake of science, and so on and so forth. he would despise it and have no choice but to suffer, because after all, he himself says the weak have no choice but to chew on their own suffering and that they deserve whatever is coming to them.
so we have a scenario where 1. living in society in general is just difficult on a physical level, 2. living in society is difficult due to his dehumanization, 3. living among sorcerers is difficult due to his reputation, and 4. he has no outlet for this other than to be petty and cruel. it's genuinely his worst nightmare, having to live as a human and having to be caged at the same time. his strength and freedom are taken away from him, there's no more running away from his problems.
like i said in this post, every conversation sukuna has happens with his explicit consent. his strength and CT are a way for him to avoid any uncomfortable conversations or situations where he might have to face his own curse, by just killing whatever is the source of this forced self-reflection. but take that away? it's only a matter of time before his curse immolates him because it would be genuinely unbearable to live like this. he would have no choice but to face it again and again and have no way to eliminate it. so either he faces it or he genuinely just kills himself.
if I had any discipline when it comes to writing fanfic id honestly write something like this because i find it really interesting. alas the discipline is not there and i cannot write longfics for the life of me lmfao.
anyway i hope this answer was coherent. in short, take away his strength and his freedom, make him live in society, and watch him lose his mind (for honestly, valid reasons).