So the most commonly used argument so far is:
> The light showed to be curved and so is not real light.
Yes, she did double-fold in several scenes, but in the scene that becomes more evident, it is totally contradictory to others, since in this scene it seems that it is only a ray of light and not several, being that soon shows 2 coming toward Liltotto and Gissele.
You see, there is not something separating, it seems like all this is just a beam of light.
Here the beams show totally different from the scene in which it shows the lights above Accutrone.
In these scenes, the curvature of the light is shown, but it's like I said, it's an angle that does not help much, but then someone is shown seeing "away" and of course they went straight, which is evident in the two scans where shows the percussion of the lights.
All lights are straight
So the question is ...
Did the light come down straight or came down crooked and straightened up after reaching its destination?
We still have the argument of:
> Speed is not constant, some are faster.
However, it is clear that this was not released at the same time for all. In the scene of Accutrone, the light arrives at him and soon tries to arrive at Lilltotto, which shows that there was a brief interval between the lights. In the scene that shows the Auswahlen going up, it's the same thing, the ones that were sent first, they came back first, of course.
We also have the argument that basically makes it explicit that this is light.
As already mentioned, the Shokonmanku blocks any spiritual energy that comes in contact, ie Reiatsu (Spiritual Pressure), Reiryoku (Spiritual Force) and Reishi (Spiritual Particles) is totally blocked if it comes in contact with the Shokonmanku.
However, the only thing that has been shown not to be blocked is light, since sunlight illuminates Seireitei freely.
Auswahlen was able to pass through the Shokonmanku without interference, which is already something that shows that it is not one of the things mentioned, that is, it has no mass.
This is the strongest evidence that this is a real light, no matter how many sweeps show the curvature of light.