I was wondering if someone else involved could mean sharing or selling something from the scene. So not anyone physically present but gaining some gratification from the act. Maybe CP or snuff, perhaps even clothing or hair.
If we imagine RA was into this sort of stuff, he could have found like-minded people online (this could involve KAK, or not, and it could also involve him in a way where he really did not know who, but was aware of the crime). It could be premeditated, someone could have been givin tips, encouragement even orders. Or it could be a crime of opportunity and afterwards sharing stuff to other creeps, maybe for financial gain, maybe just in good will.
This could make someone (or multiple someones) an accomplice, yes? It would also make investigation complex, like they have been saying.
Only thing I'm wondering why are these people protecting each other? Its quite clear KAK was part of some sort of CP ring. Im sure he had some idea who was using his accounts. I take him as very puny and selfish guy. Still he seems willing to go down with the




show (this is to say, Im not familiar with latest twists in his case if there is any).
The same could go with RA if he is guilty and there indeed is an accomplice. Why not spill? Is it some twisted bro code? Is it fear for own or someone else's life? Better jail than going down the road of possible revenge? Snitches get stitches?
Just some thoughts.