I remember it, I just want to collect as many information as possible.
It makes SENse that SEN determines Grimm's perception of the Dream and when SEN is <1, almost every character is saying gibberish, like TCO. (perhaps important detail)
Mabel said that it takes a great effort for Outer One's to make their words understandable for a human.
You can also see how much tainted the soul of characters is at 1< SEN, yet someone said that it is possible to make impenetrable illusion.
Hmm...
So SEN is Grimm's affinity towards Outer One's perception, perhaps exclusively to TCO's since it is now his turn to play. Perhaps it is true that SEN relates to affinity towards TCO's intended perception of the Dream for Grimm. TCO's red eyed keepers telling Grimm literally to press a famous button FUCK GO BACK, to return SEN points.
Though you can see differently colored eyes when 1< SEN. If TCO's eyes are red, Node - yellow, Mabel's - blue, whom eyes are green? I thought it was TCO's, but now...
Though, once again, I don't understand why Grimm was supposed to see Red Hood as a monster if SEN is positive, since TCO, in my opinion, intended to see Grimm interacting with Red Hood. Why? Because TCO is happy when Grimm finally not chooses three Alices in the opening, and this is important in order for TCO to meet Grimm. And what is the reason to place keepers, if they are only demotivating to be at positive SEN? If this is TCO's game, it's quite dumb, or was it vice versa, very smart of him?