Looks Can Kill

In the Korean comments

One top comment reads, in translation, “Finally, the dance partner is somewhat normal,” playfully comparing this pairing with earlier ones without explaining the backstory. Another supplies a specific callback: Rei previously performed a cute version of CRAVITY’s “Louder,” and the commenter had hoped this pairing would happen.

What the words mean

“춤의 앙마 춤의 신” (chum-ui angma chum-ui sin, “dance devil, dance god”) calls Hyeongjun both a “dance devil” and a “dance god.” 앙마 (angma) is a deliberately cute rendering of 악마 (angma, devil), so the phrase is exaggerated, affectionate praise rather than criticism.