All the Girls Go 🤩 #Hearts2Hearts

In the Korean comments

The ending becomes a punch line in the comments: one reads, in translation, “At the end, Ian just…” before dissolving into laughter, while another calls Ian’s appearance the “final boss.” Another commenter specifically compares Jiwoo’s cat hairstyle with her apple hairstyle, calling the cat version the stronger “finishing move.”

What the words mean

오빠 (oppa, older brother or older male) is playfully applied to Carmen and Ian here. It praises a handsome, cool persona rather than literally calling either member someone’s brother; the register is casual, affectionate fandom exaggeration.