( •︠♢•︡ )(˙ᵜ˙ )

ᵜ, the mouth of the second face, is a shrunken, raised copy of ᴥ. Unicode calls it MODIFIER LETTER SMALL AIN, the superscript form of LATIN LETTER AIN, and LATIN LETTER AIN is the ᴥ that serves as the bear's nose and mouth in ʕ•ᴥ•ʔ. On this site it's drawn as a black shape that's round on top and narrows toward the bottom, with two strokes splitting off from its tip and curving down to the left and right. It can pass for a snout, just like ᴥ, or, if you take the black part as a mouth stretched wide, for someone belting out a note. The eyes on either side are ˙, DOT ABOVE, small dots sitting near the top of the line. Since ᵜ rides high as well, everything in that face is bunched into the upper left of its parentheses, leaving the space before ) and nearly the whole lower half empty, so the face looks tipped back, chin up, singing off to the left. The first face is a different story. Its eyes are solid round bullets, •, at about mid-height in the line, and between them stands ♢, much taller than the eyes. Each • carries a combining mark: ︠ on the left one and ︡ on the right, the LEFT HALF and RIGHT HALF of a ligature arc, a curve meant to stretch over two letters at once. These two marks aren't in this site's kaomoji font, so exactly where they land depends on your device, but they sit well above the eyes, up around the tops of the parentheses. The left half bends down only at its left end, the right half only at its right end, so together they make the two ends of one arc with the middle missing, and the top point of ♢ aims at the gap. They read like eyebrows raised high: round eyes staring, mouth hanging open in that ♢ shape, not a word coming out. On X, the line came after two lines written like song lyrics, with the notes drawn out, and right after it the poster added (また歌っとる…), casual Japanese for "singing again…" So you can read it as two people: the ᵜ face that just started singing, and the ♢ face watching and thinking, there they go again.