Previously, her label officially announced that she'll be making a debut in a new girl group. On the October 4 airing of 'Kim Chang Yeol's Old School', Lee Sun Bin spoke about this topic, and said, "I've been preparing for the debut for a long time. My members and I call one other 'my dongsaeng', and 'my unnie', so they were happier than me when I started solo promotions first." However, she also revealed that no specific plans have been set for the girls just yet as in the total number of members, debut date, etc.
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We hope to hear more about the new girl group soon!