Kang Daniel acted as a backdancer for Cao Lu and former SPICA member Juhyun on 'The Secret Weapon', and it seems he caught her eye even before the days of 'Produce 101'. During filming for MBC's 'Everything in the World', the FIESTAR member got onto a bus with a few high school students, and they discussed which idols are hot these days.
The students expressed they were fans of Wanna One, and they were surprised when Cao Lu mentioned she and Kang Daniel collaborated in the past. She revealed she was proud to see him so successful as he'd always been hardworking as a trainee.
Cao Lu then said sadly, "I should've gotten his number at the time."
This episode of 'Everything in the World' is airing at 11:15 PM KST! Check out the video above to see Kang Daniel as Cao Lu's backdancer.