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The girl group guested on the June 28 episode. During the show, MC Defconn�mentioned Na-Eun's younger sister and said, "Na-Eun's dongsaeng is pro golfer Son Se Eun. She's doing well nowadays, filming CFs and stuff."

Na-Eun reacted in surprise and asked, "How'd you know?''

Following the broadcast, attention toward Na-Eun's younger sister arose and photos of Son Se Eun started resurfacing.�

Netizens expressed amazement at Son Se Eun's gorgeous visuals and commented, "She looks like Krystal...", "Wow she's prettier than Na-Eun", "Dongsaengs really pretty too", "Hul, dongsaeng�is prettier."