Bring back Emet-Selch

[Iscah]

Yes, the act of trying to get rid of those already strong memories, only succeeded in burning them more deeply into him. He says it right there in your screen shot. Strong memories stick with the soul. Hermes trying to erase those strong memories just made them stick more is what I was saying.

The quote indicates that Kairos burns memories into a soul, but there is nothing in it to indicate that strong memories are saved regardless. Neither does it indicate that Kairos only does that to memories if they are already strong.

The closest evidence we have of other memories persisting is that characters are prone to being reminded of the Final Days by falling meteors, but even then they seem to describe the experience as triggering something they can almost but not quite remember.

Hermes is the only character (besides this unresolved business with Zenos) ever shown to have had specific and clear memories of a past life, while also being the only Kairos subject to have been reincarnated. There is no indication that he has naturally retained any memories outside of the Kairos-affected period.