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.
We hope to hear more about the new girl group soon!