Chuu�shared the story behind the trendy 'Chuu Heart.'

On November 20,�LOONA�and�fromis_9�guested on�JTBC's 'Idol Room.' During the show, Chuu revealed she's the creator of the famous�'Chuu Heart' that has been trending among idols lately.�

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She explained the story behind its creation, stating,�"I�was trying to make a heart at a fan sign event but it�just�turned into a circle."�Chuu explained she�bit into it to make it look like a heart, and said,�"I�just�did it but the fans�started calling�it the 'Chuu Heart.' It became a hot issue on the web and other idols�started doing�it too."