The members took the time to chat with their dear ONCE and interact with them.

During the greeting session, one of the fans suddenly tripped and fell right in front of Sana, causing her eyes to grow wide in shock.

Seeing the fan, she said to herself, "That's gotta hurt," and asked him, "Are you okay?" with much concern.

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Hearing the fan's response, her face lit up with relief and smiled cutely at him.�Seeing this idol-fan interaction, netizens commented, "Sana is an angel," "She even reacts like a true boss."