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I explained on the blog why this beam of energy is light, so read the page first. If anyone does not participate in the translation, they can send the manga panel to the translation team.
Not gonna lie i don't see where the "reflection" is in the panel that you showed here, You can't say "the first element is to put a analogy but the second is to describe real light!" The light bullet its a Light beam there are so many qualifiers to scale on
Typically, lasers and other light-based attacks are only accepted to really move at the speed of light if they meet, at a minimum, a few of these criteria:
- The beam behaves in a reasonably realistic way, such as reflecting off non-magical mirrors or refracting and diffusing through liquids and materials.
- The beam is stated to move at the speed of light by reliable sources.
- The beam is stated to be composed/consisting of photons or light itself, again by reliable sources.
- The beam originates from a real source of light, such as the Sun or the flash of a camera.
- Note that a beam does not automatically qualify for this requirement just by originating from a technological source.
Furthermore, there are a few criteria which show that a beam is not behaving like realistic light:
- The beam is shown to move at different speeds in the same material.
- The beam curves through the air or otherwise doesn't travel in straight lines (with the exception of realistic refraction or deflection).
- The beam primarily deals damage by means other than heating materials that absorb it.
- A laser may cause explosions, but only if it rapidly vaporizes some matter, meaning that the target needs to be partially destroyed in the process.
- The beam is tangible and can be interacted with physically by normal humans, as if it was a solid, liquid or gas. It shouldn't disperse when being hit as a substance would, and should not be redirectable without using a mechanism like refraction.
- While a laser can in theory push things, through radiation pressure or by causing explosions when vaporizing part of an object, those are niche circumstances and generally a laser should not primarily push things away like a physical projectile would.
- And even that it's not enough
Please note that the opposite of these criteria do not prove a beam is at lightspeed, merely that it could be, should it meet enough criteria from the first list. Should there be great evidence in favor of the light being real or lightspeed, a comparably minor showing against it being real can be overruled. Other real life scientific details about the nature of light being given in relation to the beam can also qualify as criteria on their own, just like the evidence above, as long as they are sufficiently exclusive to light or lightspeed things.
Particularly reliable and scientifically accurate evidence can qualify a light beam or laser to be considered to move at light speed on its own if it shows very clear understanding of the workings of light and/or light speed such as an explanation of electromagnetic radiation or the exact speed of light (299,792,458 m/s) being mentioned, though it must be noted that simple repetition of a simpler statement or showing does not make it more reliable in this regard. Additionally, if the characters that would scale to a light beam are already very close to light speed or even exceed it, there is less of a burden of proof regarding the light beam's validity.
Netero did his beam from all his Nen that isn't a physical source and the animation it's just a representation of the anime to illustrate the "dazziling star" and the "burning effect" that you mention here needs more proof cause even Attacks like Kamehamehas,ki blast,.. can have some "burining effects' without being really burning material or just like Gojo with purple vs sukuna, in the end sukuna he's literally Black from the explosion but the purple isn't burning material so without statements or narration it's not very clear.
