@Paradox something else as i understand
sort of.... a vocalization extension sorta like the tilde in japanese (i.e. うぐうう〜)
or at least, that's how i've theorized it, and nobody's argued :3
can also be used to show emotion, like... sorta fuzzy brain mode (i.e. creatures,,,,,)
sometimes also seen used on its own
in any case, i love it and adopted it quite quickly after seeing it :33