TWS 'Call My Name' Official Teaser 1

In the Korean comments

Commenters coin compact mood labels for the teaser: “아련청량” (aryeon-cheongnyang, wistful freshness) and “몽환 청량” (monghwan cheongnyang, dreamlike freshness). Another comment reads, in translation, “Shinyu’s face urgently needs to be designated a proper noun,” an exaggerated way of saying his look is uniquely striking.

What the words mean

In “개설레 뭐야 개고능함” (gaeseolle mwoya gaegoneungham, “Why is this so ridiculously exciting? This is insanely smart”), “개” (gae, literally “dog”) is a blunt slang intensifier meaning “extremely.” “고능함” (goneungham, high capability) praises the teaser as exceptionally smart or well executed; the whole line is highly casual and excited.