Jujutsu Kaisen: Power System

@ohnomypotato-airaka and everyone else who's confused about what's going on in this manga with all these powers.

From one of the fanbooks I think, Gege made this Ability tree/chart to showcase how the power system in JJK works:

First and foremost, this Tree starts with CURSED ENERGY on the mid-left part of this picture. Meaning: you need a certain amount of CE to even try to become a sorcerer. From there the abilities branch out to CURSED ENERGY MANIPULATION (CEM), INNATE TECHNIQUE and NEGATIVE EMOTIONS.

I once made a post where I tried to map out all the abilities of the main cast. What I made at the time looks like this (it's incomplete of course):

But what the fuck do all of these things mean? Well, it means that you gain jujutsu abilities one step at a time and sometimes you need to master two different abilities to gain access to a new one. Let's look at Domain Expansion.

The path: CE -> Negative Emotions -> Innate Domain -> Curtain -> Barrier Technique -> Domain Expansion

Only if you follow this path will you be able to expand your Domain with the Barrier Technique being the most difficult ability where most sorcerer fail. EXCEPT for Megumi. He activated his domain without mastering the BT first, instead he compensated that lack of ability by using external barriers in the creation of his Domain.

(We have since learned that this compensation is exceptional and that with the skeletal construct inside Megumi's incomplete Domain, he's basically the next one in line to learn to expand an Open Barrier Domain)

The thing that's relevant for last chapter is the fact that after a DE ends the users Cursed Techniques become unstable meaning they can't use them anymore for a certain amount of time. A technique is everything on this branch:

What do those words mean?

Inherited Technique: Limitless, Strawdoll Technique, Anti-gravity System

Non-Inherited Technique: ok, nothing really comes to mind but summoning generic Shikigami might be this

Cursed Technique Lapse: Blue, Resonance/Hairpin, Anti-gravity. Don't get confused by the word Lapse, it just means normal application

Cursed Technique Reversal: Red, Gravity. As you can see CTR has two paths leading to it, the second one coming from Reverse Cursed Technique (RCT).

RCT is not an actual technique as you just multiply CE with itself to create Positive Energy. What happens is this: Gojo uses his Technique and when he powers that Technique with Cursed Energy he gets Blue but when he powers it Positive Energy he gets Red. The same goes for Kenjaku and Anti-gravity and Gravity.

Positive Energy does not occur naturally inside the human body so to use a technique like Red, Gojo has to use two times the amount of CE.

Hope this helped :D