hi, jenjen! so sorry for the late reply.
i just saw the full leaks and i don't know what everyone else is thinking i saw some people are sad yuji didn't end up together with sukuna or that yuji wasn't much the focus but. i personally LOVED it?
as much as i'm a huge fan of sukuna and yuuji either living or dying together, i'm also happy that this was the actual ending because it's more than i expected. and honestly it's very fitting for both of them. it really was such a subtle nod that yuuji was the reason why sukuna is headed on a different path, but it's still there and it's amazingly beautiful after everything they've been through together.
would i have liked to hear more of yujis thoughts sure but, his last smile is because of sukuna, he smiled up at the sky before we saw sukuna chose to change, he Felt that sukuna knew what love was and I've been losing it because sukuna literally changed because of yuji he turned his back to mahito whos a curse unlike him hes the manifestation of hating humanity and Chose that next time he'd like to walk a different path, loving others, the way he returned love by comforting uraume because yuji taught him love and as kashimo was saying "how can you return something you've never received"
the way yuuji's last scene is one with so much happiness....
i believe that after spending that much time tied to each other, sukuna and yuuji can still sense at least some of each other's feelings. yuuji looks so hopeful and at ease here. he's gotten through everything alive, with his friends by his side. but more than that, sukuna is no longer so serious a threat.
yuuji says "it's not dangerous anymore." even though the power contained in just one finger is what started this whole series, it's no longer a threat now because i think that sukuna's malice, his hatred, is finally subsiding as he considers a different path. and yuuji, perceptive and empathetic as he is, can sense that.
he's also looking down at his missing fingers, both the ring finger and little finger (i read a really amazing post about that just recently). i feel like the way yuuji is looking almost fondly at those missing fingers (the little finger for a promise and the ring finger for love and loyalty) shows us how much it means to him for sukuna to finally learn love.
him choosing to not restore one of those fingers indicates that he would rather have it missing, almost like an eternal reminder of what he and sukuna were to each other. because he knows that their time together has ended (for now....) but he's accepting of that because he and sukuna are both at peace, finally.
as for how yuuji taught sukuna love, i believe it's because - unlike everyone else - yuuji treated sukuna like a human, something neither gojo or yorozu or the rest did. and i believe that was the first time in a long time, if ever, that sukuna received such empathy.
i noticed in this scene how in his conversation with mahito, sukuna seems so much more open and even willing to reflect back on what he previously believed in. this is completely different how he is hostile or cold to anyone who challenges him. he only ever felt doubt over his ideals when yuuji confronted him, because yuuji alone had the kind of power to affect the unshakeable sukuna in such a way.
i've been a long time believer that sukuna became the king of curses to spite those who deemed him cursed at birth. and it makes sense that he would prey on those same humans (and curses) to not only maintain his status as the strongest, but to also get away from the fact that he almost starved before he was even born. such a horrifying experience more than likely led him to believe early on that only pure strength could protect him from such a fate, and only those at the top deserve that kind of immunity from suffering.
yet i feel like sukuna was suffering. he himself said "i feared my own curse would immolate me." so being the strongest didn't keep him insulated from those feelings, that loneliness and hatred. he couldn't keep being indifferent or 100% hateful either.
and i think sukuna understood that only when yuuji took him on that little date in his special memory mind palace (or whatever his domain is called since we don't know its name).
instead of attacking sukuna or making assumptions about how sukuna feels or projecting his own feelings onto him like gojo or kashimo did, yuuji is instead being open with sukuna, the most open he's been with anyone.
and sukuna is just shocked into silence for most of this. (i like to think his inner voice is freaking out at how intimate yuuji's being with him, recounting the smallest details of his childhood and walking sukuna through his life story).
this scene was particularly interesting because of how yuuji's describing the kind of feelings that come with discovering his first home town was pretty much abandoned, much like how there were so few people to mourn the passing of his grandfather's friend. you would expect someone to feel upset or even shocked about that, but yuuji wasn't. he said he wasn't "shaken" by it. and sukuna's silence, the expression on his face, seem to indicate at least some thought. for someone he called weak, yuuji is proving to be strong. emotionally and mentally because he had a foundation to keep his feelings tethered his whole life: his grandfather. wasuke's care allowed yuuji to be the kind of person he is, and it shows us that yuuji draws his strength from others, contrary to how weak curses come in packs or how sukuna feels like being alone is the only way to be strong.
something i think that did impact sukuna during their date was how yuuji is being emotionally vulnerable with the self-proclaimed king of curses, someone who wants to be seen as an inhuman force of chaos and evil, someone who considers himself above the "suffering of the weak" and the "loneliness of the strongest." sukuna, who claims to put no value on love or fulfillment, yet yuuji is showing him how such little things and memories gave meaning to his own life. he's talking to sukuna like an old friend, he's showing sukuna how he thinks and feels. not because he believes sukuna deep down is the same way (he even admits to knowing better than that, saying he expected sukuna to reject his ideals even before he tried to show them to sukuna) but because he wants to get closer to sukuna, to connect with him.
their souls are tied together. they were practically fated to end up together, and yuuji was made literally for sukuna. the only who could endure sukuna's poison, the only one who could control the king of curses. yet, despite all his advantages and strength over sukuna, yuuji never forces sukuna into anything. he's always given a sukuna a choice: "free megumi and come to me" or "live together with me because i only will accept you." because yuuji understands sukuna. not fully, but more than someone like gojo did, who only ever saw sukuna as an opposition because they were both "the strongest."
and yuuji wanted to understand sukuna more. to give him not just a second chance but to provide that fulfillment that wasuke and yuuji's friends gave to him. the fulfillment that sukuna denied needing. but yuuji understood that sukuna became a monster who ate humans for their "fleeting taste" as a way to pass time until his death because of that lack of fulfillment. (i feel like yuuji understood these basic feelings even if no one explicitly told him what sukuna talked about with kashimo. being so empathetic, i believe yuuji picked up on sukuna's true feelings both during and after the time they shared a body).
but for all that yuuji and sukuna understood each other, sukuna couldn't fully believe or accept yuuji's proposal because he would rather die being seen as the thing he was perceived at from birth on: a curse. he pushed yuuji away, but i have a feeling it was because he simply couldn't conceive of someone caring for him that much.
but yuuji comforted him even during sukuna's death, and held him tenderly. he never forgave sukuna, and he probably never would because yuuji knows that even if sukuna became a monster because of others, sukuna still did terrible things. he didn't offer sukuna redemption: he offered sukuna fulfillment. and that is so much more sincere. yet sukuna turned his proposal down because, though he was touched, it was simply too much for him.
but it did change his outlook. it did finally "free" him from his own curse.
this ending for me wrapped up the whole story in such a sweet way it's not perfect but it's just as much about sukuna as it is about yuji. yuji changed him. and to me the "let's try again" and the "next time it might be nice to walk a different path" are clear signs that the two will reincarnate and be together in the next cycle however that will be we know reincarnation is canon.
i have a strong feeling this isn't the last we'll see of sukuna. and to be honest, i have a crazy hope that this also isn't the last yuuji sees of sukuna. as you said, yuuji was willing for them to "try again" and it seems like to me sukuna has had a change of heart towards yuuji. he might not resist yuuji as much in the next life as he once did.
i think he needed to be away from yuuji in order to really feel something positive about yuuji's words and process everything. and yuuji respected sukuna's decision to die rather than come back to him because they both knew it was too late for them in this life. sukuna and yuuji could coexist, but whether or not they should after all of this is probably something they knew wouldn't happen. even though yuuji would be willing the fight for them, sukuna would probably consider it a form of punishment to be stuck back in the brat (even if he doesn't hate it or even if he comes to love it) because i feel like he would remain bitter about losing for a long time.
but him choosing death has let him have more control over his own choices, and in the next life he might just choose to make his way back to yuuji, too. still, even if yuuji didn't keep sukuna from dying, he still gave sukuna that choice. he showed sukuna he wasn't a true curse like mahito, that sukuna was in fact human and more than just a chaotic force of strength alone. he essentially freed the king of curses from his own curse.
and sukuna looks happier (and softer) because of it.
he's finally giving up on his vengeance. and it was because of yuuji, who he lost to, that he won against his own curse.
i take back something i said before i don't think gege hates yuji and sukuna he just probably got overwhelmed with having so many characters he was trying to balance everyone out and writing characters he already knew probably came easier, imo the worst he treated were nobara and megumi
i agree with you, jenjen.
i feel like the editors/publishers highly discouraged gege from giving more depth to sukuna and yuuji's story together, but gege resisted and gave us amazing interactions anyway, even if they were a bit rushed and sudden. i do feel, however, that gege undervalued yuuji a bit. i can see a personal bias in gege's tendency to spend so much time and focus on yuuta, but other than that it's exactly how you said it: gege was trying to give attention to all the characters, but being rushed certainly didn't help their story at all. yet gege did the best they could, and i think this ending really reflected their writing skills.
i do agree that both nobara and megumi were treated terribly by the narrative, and i wish they were handled better, but at least they're happy and all back together now.
the last panels of his manga are yuji smiling because of sukuna saying that his finger is now the perfect talisman (something that protects) and sukuna choosing to go north because of him, choosing himself to change instead of yuji forcing him to change, but still because of yuji.
i love how this doesn't really feel sinister at all. like it could be just me but it looks almost peaceful how the last finger is just sitting there, with the leaves around it. despite how threatening it looks, yuuji trusts it to be a talisman that protects, not damages.
and it's the perfect way to say yuuji and sukuna have gone their separate ways for now, but there's a chance they'll meet again. they made their choices without either of them being forced into it, but they were still the most significant people in each other's lives: sukuna because he put yuuji through a living hell but also awoke yuuji's sense of purpose and belonging, and yuuji because he led sukuna north and changed their narratives.
all i can think about is how sukuna once screamed that yuuji's future was his. and it's true. sukuna being inside of yuuji changed his entire life, even to this day, because there are still reminders of sukuna with yuuji's missing fingers. but it's also true that yuuji changed sukuna's future as well. they both impacted each other so much, in all the best and worst ways.
there will never be anything quite like them. i'm really going to miss them so much...
hope you've been keeping well, jenjen! thank you so much for the wonderful ask <3