Oric's "this is going to be one of those cycles" upon seeing Proxxy with Ciro makes me suspect that Oric is afraid of Ciro learning more.
But in that case, why is he offering up plot information?
Then again, it seemed more like irritation than fear. Perhaps Oric knows that he will face the party on DL8, and wants to save time. In that case, the fact that he was merely irritated suggests that conventional tactics will not work against him and that the additional party member will only slow him down.
Hmm. I think I may compile a list of every single thing Oric has done, to aid future theorycrafters.
I think the cycles and plot information are freely offered because Oric knows that Ciro won't be able to stop the cycles... and by I won't I don't mean Ciro can't but something forces Ciro's decision.
I'm still convinced that the purpose of the cycle is so that Ciro accumulates Soul Charge. The problem with Soul Charge is that it is sort of a finite resource. Either you steal it from someone else or you convert emotional energy into Soul Charge. Meaning that unless someone becomes an emotional reservoir you only have so much of it.
Ciro's adventure of killing siblings and having near death experiences is there to create Soul Charge... more specifically to give Ciro a ton of Soul Charge.
And Oversoul Mode allows someone to transfer Soul Charge as we saw when Ciro fixed Riltia.
Perhaps the point of this is so that when Ciro reaches the end and finds the Over Soul, his only option is to pour his Soul Charge into the Over Soul which in turn starts the process over again. Ciro finally confronted with freedom chooses to recreate the prison.
For some reason I'm thinking of that Dr. Who episode, where people find out the truth and are given the choice to Forget it.
Like there's some big secret. Something to do with the Angels' Lord and Illborn. Maybe at the core of the Warrens is a corrupt soul. Something that needs Soul Charge... not to survive, but to placate it or keep it dormant.
And Ciro's only real option is to make the sacrifice to keep everyone alive or...
...perhaps something worse... perhaps in order to make said sacrifice Ciro's has to be willing to sacrifice everything he's gained.