Yume has definitely risen to the top of the ranks of the Gray.
I've said before, but I really appreciate how Yume's status as a part of the Gray world was hidden in plain sight all along. Her power to "smell" danger was never emphasized as something overly special or unique or like some superpower like most protagonists with a special ability, with people consistently expressing awe or it letting her pull out last-minute saves. I mean, it did, but it basically just let her deduce the safest path and actions. She had to think carefully.
Basically, it was such a mundane power and always treated so normally, that it managed to be genuinely shocking to find out it was the lingering remnants of dormant omniscience. And for once, the protagonist turning out to be a super-powered omniscient being doesn't just feel like "protagonist privilege" but actually... Weirdly natural.
but seriously Hama better be alive somehow, Yume needs her back