Let's not forget what Luna said about him being the only "person" she can't use her ability on, that he feels like a piece of furniture or something like that... and the hints from the creepy visions that this is not the first time the MC is going through this journey, perhaps he is just removed from time itself and is in a loop (or in a load/save state) until he gets the desired outcome which I have no idea what could be at this moment lol.
/Record scratch
Wait, what?
/Furiously looks at his notes
Which scenes imply that, exactly? Because the only things I got from the visions were:
a. That Orion (Eternum MC default name) is a "special" case like the MC of OIAL, in that he is getting visions that are (possibly) magical in nature. Possibly related to a past that he no longer remembers (hence the blood and all of that in his first vision...maybe he's a test subject of sorts in the past? A Sons of Astaroth experiment gone horribly wrong?), or is bloodline related (some are speculating that Eternum MC has demonic blood similar to OIAL's MC).
b. That the one person involved in said visions knows who Orion is. Possibly knows him through magical means or has kept an eye on him ever since his encounter with her. Said person may or may not be AI. Currently leaning on the former, possibly someone who's trapped in Eternum and needs Orion to break her out. Also possibly related to Founder or whatever he is up to.
b.1. Floating theory in F95 thread mentions that the AI are possibly spirits. If true, it's possible that Eternum may be a prison of sorts, or the system that is making Eternum possible is responsible in keeping said spirits imprisoned.
c. That it's all cryptic bullshit that's probably going to be explained later on in the story.
Also, if this statement is based on that cryptic line Idriel said before Orion got kicked into Eternum for the first time ("This time...it will be the right one"), I'm not so sure if that qualifies as "Yeah, you've been here before. Hopefully you do good this time." If anything, it could be related to his perfect compatibility rating, how many before him either didn't qualify or failed in whatever Idriel wanted them to achieve/do despite having said rating, and now Idriel is like "This time this schmuck is gonna be the right one. I'm sure of it." As for what she could possibly mean by that, I don't know. We'll just have to wait and see I suppose.