The youngest member of the current iteration of Brave Girls was born in April 1993, one month earlier than KPop's Senior Singer, so all of them are older than the person in my sig.
However, IU is more senior than any KPop singer in town except the few who debuted before her.
Do you think Brave Girls have a filial duty to IU so they should defer to the latter?
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More specifically, because the K-O-R-E-A-N men in their 30s and early 40s have congregated around Brave Girls, even when Lee Jieun releases her new album in 11 days, Rollin might maintain its top position, dealing the Senior Singer a huge blow.
The only time an IU title didn't reach #1 in digitals was on late 2017 when her hastily chosen title was beaten by Autumn Morning, a 1991 song remake she had released a few days earlier.
But, it is likely that enemies of Lee Jieun might unite to support Brave Girls to humiliate the Senior Singer.
I do not think Lee Jieun thought too much about Brave Girls when she was planning her album, but for the first time, she might meet someone who may not pay filial duty to her for the first time since L____m.