Looks Can Kill (eyebeam ver.)

In the Korean comments

One comment reads, in translation, “Just imagining this shy kitty going over personally to ask them to do the challenge brings tears to my eyes.” This is the commenter’s affectionate speculation, not confirmation of how the collaboration was arranged.

What the words mean

수줍냥이 (sujupnyangi, “shy kitty”) combines 수줍다 (sujupda, “to be shy”) with 냥이 (nyangi, “kitty”). Here it is a casual, affectionate nickname for Liz, not a literal reference to a cat.