#but rather indirect consequences of their actions on some meta level of the story

[posletsvet]

Was anyone going to point out to me that the reason why curses were swarming the streets and filling every empty nook and cranny in the summer of Geto's spiral was actually Gojo Satoru?

The narrative already bears witness to how Satoru's mere birth tips the balance of the world. As the first Gojo to be born with both the Limitless and the Six Eyes in what is almost a half-millenium, he holds unparalled power. Him simply existing is enough for curses to spring into action and start growing in strength as well.

When he suffers a crushing defeat by the hands of Toji and subsequently thrusts himself vigorously into perfecting his technique, this rapid increase in his strength puts into motion a similar process. He becomes stronger, and so cursed spirits follow suit. He breaks the fragile equilibrium, and cursed energy seeks means to restore it.

First time Satoru Gojo changes the world, he is named the strongest. Second time Satoru Gojo changes the world, he becomes the strongest.

Now, this might be a bit of a stretch on my part, but what if Geto's defection and everything in its aftermath is how the world responds to Gojo being the strongest? After all, you cannot balance the scales by putting too much weight on just one side.

Suguru's abilities as a sorcerer are inherently deeply tied to Satoru's, and intentionally so. The stronger he is, the more potent the curses are -- and therefore the more potential there is for Geto's technique. I have said it before and I'll say it again: they are a perfect counterbalance to each other. The equilibrium is broken by Gojo twice. Each time, Geto is there to restore it: first by being born with the ability to manipulate curses, then by creating the opposition to jujutsu society, which Gojo has become the centrepiece of.

Ever since Suguru Geto entered the narrative, he has been the one to keep Gojo's powers in check -- hence preserving the balance. That's why the narrative brings him back: in order to be well-balanced, it needs both of them to be present.