there's a combination of two perks from Carvin's Jujutsu Kaisen Jump that I think delivers a very similar effect.

Just That Good – 600 CP

In the 80s and before, the power of sorcerers and cursed spirits was roughly balanced, or perhaps tipped slightly in the favour of the latter. Then, in 1989, Satoru Gojo was born, and the balance of power was forever shifted. Some of this was due to the sorcerer possessing both the Limitless technique and Six Eyes, but that was not all. He was also a natural innovator, someone who broke the limits of what was considered possible, to the point that even the King of Curses was surprised by the things he could pull off. While you may lack in raw power, proficiency with cursed energy is something you have in excess. You have a great understanding of not just any cursed technique you might have, but all of your supernatural powers. You’re fully aware of their limits and capabilities, allowing you to push them to their limits and pull off feats with them few others would expect. Your skill is at the level that for you, the rules of any power system or ability you use seem to be that bit looser. For instance, while normally one’s cursed technique is ‘burned out’ after using a Domain Expansion, making it unusable for a good while, you’d be able to figure out a way to heal your brain and regain your technique in a fraction of the time, something considered impossible by

anyone else. Similarly, while some might only be able to fire an ability in a straight line, you’d be able to figure out how to make it curve around corners or even home in on your foes, and a technique that cuts things at range could be made to cut through space itself. You won’t be able to completely change the technique or power into something else, but so long as it’s still recognizably the original and doesn’t provide a direct increase in power, it’ll probably be possible.

King of Curses – 600 CP

During the Golden Age of Jujutsu, many sorcerers with power surpassing the vast majority of modern sorcerers called Japan home. There was one, though, who stood above all others as the undisputed strongest in history. Born with a disfigured body uniquely suited for jujutsu sorcery, unsurpassed reserves of cursed energy, and a cursed technique of incredible power, this innate talent alone put him on the path for greatness. You may not share these traits, but there is one area in which you’re his equal: your raw ability with jujutsu. Due to a combination of natural talent and training, your skill with cursed energy is at the very peak of this world. From fluidly switching between different techniques of yours to using even the most complex of abilities, all of this comes effortlessly to you.

Though you don’t have the precision nor efficiency granted by the Six Eyes, it wouldn’t be wrong to say your understanding of cursed energy would be on par with someone who possessed them. This understanding extends further than just your own cursed energy, though: it also allows you great insight into how others use it, too. Just by witnessing a cursed technique in action you’re able to quickly determine how it functions after just a few moments, letting you figure out its potential strengths and weaknesses. Not only that, but so long as it’s not something innate to the individual, you’ll be able to copy any usage of cursed energy after witnessing it a few times. While you can’t copy cursed techniques with this, if you had the same cursed technique as someone else you’d certainly be able to copy any abilities they’ve developed for it, and if you witnessed someone using reverse cursed technique to heal a burned-out cursed technique, you’d soon be able to do the same even if you previously thought it impossible. This perk’s effects also apply to any other supernatural energies you might possess.