After that humiliating first use of the system, I took some time to learn more about it in detail.
For one, it didn't seem limited to things only if this world, and it could truly grant anything provided I can fight for the right to utilize what I asked for. However, it'll strengthen or weaken the opponent I have to fight for my reward depending on what changes I make to the ability.
Take me asking for heavenly restriction without drawbacks like losing cursed energy for example. Asking for Toji's heavenly restriction was already a large enough ask, granting massive enhancements to all physical aspects of oneself on a level so great that someone with such a body can overpower a soul that's taking it over.
However this world dictates that in exchange for this kind of heavenly resurrection you must sever all ties to cursed energy as a whole, becoming independent of it entirely. Otherwise you'll end up like pre-awakened Maki who had cursed energy by proxy to her twin therefore sealing her heavenly resurrection and making her a slightly stronger regular person relative to her full potential.
"If it's any consolation however, this ability is overpowered as hell, and I've already thought of some creative ways to utilize it..." I thought standing with a stretch inside the innate domain within Yuji.
Currently he was going through Jujutsu High's entrance exam and I'll admit it was funny to see him getting his ass kicked by that cursed doll every time he tried to speak.
Anyway, I see why Sukuna spaced out during his time in between control. This wasn't nearly as exciting as actual blood shedding combat whatsoever.
Opening the system I decided to make a smarter request so to speak, basically I didn't want an unfair ass kicking again so I'll tone it down.
Cursed Energy, the corner stone to the jujutsu world and what usually desides one's overall strength. Without it your strength as a scorcerer won't improve and your skills will matter less and less to scorcerers with greater cursed energy. You could close the gap with refinement but 9/10 times they'll have good refinement themselves leaving you back at square one.
With all this in mind, I set my reward as one fingers worth of Sukuna's power, it should be easy enough considering the fact I don't plan on playing it fair when the opponent isn't even real.
I soon find myself back in that same space, a copy of one finger Sukuna forming as I immediately rushed it in a burst of speed. As I got close he dodged trying to grab me and utilize cleave on the side of my ribs.
However I planned for this, after all I know how Sukuna would fight since I'm now Sukuna. I used the cursed energy I was going to put into cleave and released it all as a violent wave of dismantles in every direction.
The copy Sukuna in front of me found his arm cut to shreds as he leaped backwards, but I quickly gave chase.
"Hmm never fought anyone with my technique before..." The copy said as he fired his own dismantles which I meet with more of my own.
Thanks to the level of refinement we both had, it took nothing for us to fire hundreds of these casually not to mention the amount of cursed energy in one finger was enough to make a curse special grade on its own.
With a bang we clashed in the air as he twisted kicking at my head as I blocked leaving us locked. We both grinned as we activated cleave simultaneously and I cut his leg off as he cut off my hand.
We both use RCT, our missing limbs reforming as I don't wait until I heal fully and launch more dismantles forcing him to jump back as I touch the ground to throw large chunk of earth at him.
"Haha, who'd have thought fighting myself would be so fun!" He said as he caught it turning it to dust with cleave only for my boots to slam into his face through the debris.
"What am I doing, I'm treating this like the burnout means anything, I'll be fine after this anyways" I thought and made a hand sign as I felt my energy rapidly vanishing from my body.
"Domain Expansion: Malevolent Shrine"
"Huh? What bad timing for a domain" the other Sukuna thought, although he started forming his own hand signs as well.
The domains both clash equal in power as expected however I have one advantage that this Sukuna doesn't.
"Time to become a binding vow merchant, in exchange for never being able to use a domain on this specific Sukuna ever again in my life, my domains output is quadrupled."
The instant I said those words, my domain started releasing slashes faster pushing back one finger Sukuna's domain until the slashes reached his shrine cutting it to pieces as he looked shocked in the last seconds before he was shredded to dust.
"What a reckless bastard...." He said as he faded and a dark surge of energy coursed through my soul. I felt way stronger, not just twice as strong either but beyond that.
"This might be addicting" I say sighing as I decided to check something.
I use the system to create another one finger Sukuna and using my now superior stats overall I unleash dozens of dismantles that tear him apart instantly. Once again I feel another surge of strength but it's less than I expected it to be.
Well technically the amounts the same, but due to the nature of the fingers and the practically exponential growth they provided me, It seems this time I only gained 1/4th the power required to reach the level of a fully realized 3 finger Sukuna. It felt like trying to put together my soul by copying the same fragment over and over hoping it'll grow.
"I see, the reasoning behind such vast growth upon consuming his fingers is because he's piecing himself back together, becoming whole again. And that brings him to his original strength hehe." I smile and make the domain hand signs again and make the system summon two finger Sukuna.
The second he forms I already unleashed my domain killing him before he could retaliate and I feel that same surge inside me again.
"Oh that's good...." I say my power rising to a bit beyond 3 fingers due to the excess of those duplicate one fingers I killed.
And to think that I can still get a boost from eating the 20 original fingers out in the real world outside the system. By the time I get to Shibuya, I may even already be at the level of 20 fingers Sukuna and have other techniques of my own to boot...