About the relationship between the GFriend Choreographer and the Bulletproof Boys, BTS

Answer 1

The relationship between the GFriend Choreographer and the Bulletproof Youth Group BTS is complicated. For details, please refer to the following information:
Bulletproof Teenagers BTS was a high-profile Korean boy band known for their music, dance, and visual effects. Their music works were popular around the world and received many music awards and recognition.
2GFriend was a South Korean girl band that debuted in 2019 and attracted a lot of attention with their unique music and dance style. Their dance teacher was a female dancer named Li Caiyan.
3. In some media reports, there seemed to be some interaction and cooperation between Lee Caiyan and the Bulletproof Teenagers bts. For example, in some music videos, Lee Chae Yen might dance for the Bulletproof Teenagers bts, and the Bulletproof Teenagers might invite Lee Chae Yen to dance in some performances.
However, some other reports pointed out that there was no substantial cooperation or interaction between Lee Caiyan and the Bulletproof Teenagers but only superficial courtesy and politeness.
There is currently no official information or proof of the relationship between the GFriend Choreographer and the Bulletproof Youth Group BTS. Therefore, these reports and speculations were only for reference and could not be confirmed.