You mean IU?
Why is she considered a senior singer though?
She debuted in 2008 and the "senior" in KPOP for idols means they've been an idol for a long time.
Even some 3rd gen groups are considered senior idols.
Nah, it's a drag.
Nobody calls IU a "Senior Singer of K-pop".
She's not even 30 geez :P
She did debut early, and she is considered Sunbae to most of the groups active today.
But just watch her interactions with other idols. She's always sweet and invites them to their concerts
or goes out of her way to make them feel good on her interviews.
The last interview she did with Akmu, Suhyun was calling her Unnie and she was smiling all the time.