thumbs up if u like it #Hearts2Hearts

In the Korean comments

One top comment offers a precise replay cue, reading in translation: “Why is Ye-on such an adorable little good kid when she bends her knees slightly as she comes forward?” It singles out that small knee bend, rather than the main choreography, as the charming detail.

What the words mean

착둥이 (chakdungi, adorable good kid) combines “good” or “well-behaved” with an affectionate suffix. Here it does not seriously judge Ye-on’s character; it playfully says that her slight knee bend makes her seem endearingly proper and sweet. The register is casual and affectionate.