Y'know,
one thing I noticed doing researching for my Divine Power project is that, in Toyotaro's
Super manga, Super Saiyan God and the
Gods of the Universe themselves are particularly lacking in
aura. Whenever Goku or Vegeta enter Super Saiyan God, their aura does not explode; rather, nowadays, what explodes from their bodies is
a shockwave—a blast of invisible energy, usually followed by
a little twinkle around their figure. In the earlier chapters, they exhibited visible auras when in-flight or even when preparing for combat, but by the time of the "Future" Trunks Saga, the aura was all but completely removed. Even when charging blasts,
they lack an aura. When Toppo began using his godly powers,
his aura quickly disappeared. Hell, when Vegeta transformed into a Super Saiyan Blue against Moro on Namek,
his aura was literally depicted as returning to his body. And, all throughout the big Gods of Destruction battle, they did not manifest a visible aura
once. All of that is eerily consistent with how
Chōzenshū 4 describes God
Ki as 質の高いクリア or "clear, high-quality"; the energy of a god is literally clear or formless, meaning you cannot sense it whatsoever unless you are a god—cannot see it, cannot feel it, likely cannot hear it either. Only when a Super Saiyan God becomes a Super Saiyan does their energy erupt, causing a leakage, which Goku and Vegeta have since corrected.