Looks Can Kill (eyebeam ver.)

In the Korean comments

The hair styling gives viewers a specific detail to revisit. One top comment reads, in translation, “Gaeul’s long, straight black hair is so pretty—it feels like going back to the debut era,” while another singles out the pairing of Rei’s bob and Gaeul’s long hair.

What the words mean

“어떡할거야” (eotteokhal geoya, “what are you going to do?”) is literally a question, but the comment “This is a pairing of my two favorites—what am I going to do?” is not demanding an answer. It is a casual, exaggerated way to express delighted overwhelm.