Now the framework is completely different and the lines between Memory, Dreams and Souls are blurred.
A person's personality is practically the sum of his memories and experiences.
Phantoms in dreams are practically just echoes of memories left by our soul.
Souls are... actually, I'm not sure here and I doubt that there are many people in this world and in the superhuman world who would be sure
From what we know about phantoms in the dream world, it seems that some phantoms are still connected to living souls (which is why the MC was able to convince the woman to release him) but some are just remnants left behind after people die and their souls pass on. What is interesting is the fact that it seems that only those whose souls have actually entered the dream world have a truly material form, instead of only a phantom of it appearing there (with only a few exceptions that transcendent to a higher form of being).
I admit that for a long time I thought Syla was just something the MC subconsciously created to help himself evolve and gave it his mother's form, along with all the memories he had of her.
That turned out to be completely wrong, but what convinced me the most was the fact that Syla has a physical body in the dream world, so she's not just some memory, she's really her.
MY THEORY
If MC were groping Syla's breast at the time he ascends to the dream world, perhaps through their connection, her soul could be returned to her body. (I guess he could also put his hand on her head or something, but that wouldn't be as funny.
)
But I don't think he could do it right now. For one, it's extremely difficult to actually consciously enter the dream world (so far we only know of two lvl 5 captains that can do it, and Nyx can only do it because we just showed her) and for second, for manipulating someone who was probably at the chosen level would MC probably had to be at lvl 5.
Although, wouldn't it be possible for Nyx to mark a soul in the dream world?
Then she could revive Syla without any problems.