J-Black, who was in charge of the dance part for Siri Aijing in the intro, gave an interview.

J-Black and his wife, fellow dancer Mari, appeared on Lee Ji-hye's YouTube channel and had a conversation.

It looks like the two of you were in charge of this choreography.

It usually only takes 10 to 15 minutes to visualize the choreography that pops into my head.

However, it takes more time to get into the details and think about how to teach.

Meanwhile, unusually, A2O received a request from the company to make it more difficult after receiving the first draft.

This is J-Black, who said it was impressive.

And actually, the time spent teaching Siri and Aijing was probably less than 20 minutes.

I also expressed my surprise and praise to the two members who absorbed it perfectly during that time.