IVE's Deadly Charm

In the Korean comments

One top comment reads, in translation, “Blue is a perfect match for Liz.” Several comments call the pair 아깽즈 (akkaengje, “baby kittens”), an affectionate collective nickname that frames both performers as especially cute.

What the words mean

찰떡임 (chaltteogim; literally, “it’s glutinous rice cake”) means something suits someone perfectly here. It is a casual, shortened use of “perfect match,” not a reference to food.