[Astraios]

Originally Posted by Flawnalyst

I can't summon any energy to argue why he became blind or why that's relevant and such. Maybe in a few days.

I have just thought a theory:

Spoiler for Blindness:

Perhaps Shu absorbed too many voids/cancer crystals, somehow he overloaded and this caused a damage to his brain.
But anyway, the guy suffered too much, he deserved a better ending.