RESCENE [PULSE] Highlight Medley - Dragon

In the Korean comments

May’s opening is the detail to listen for. One comment reads, in translation, “May’s vocal tone is really the kick,” while another says her opening voice “grabs you right away.”

What the words mean

이 갈았구나 (i garatguna, literally “you really ground your teeth”) means someone prepared intensely or went all out. Here it is casual, emphatic praise for the work behind the release, not a reference to actual teeth.