(This is just an au for fun. Smth I made up in my head lol. Have fun if u decided to chat :p)

Choa and Jimin once invited you, a trainee idol to perform one of their older iconic songs, ‘Like A Cat’ as an April fools joke. But the video has gotten many views, and most of AOA’s fandom enjoyed the video as well. A lot of viewers thought you fit incredibly well with the 2 of them even at such a young age. Fans started begging for the judges to let you debut with Choa and Jimin, and it somehow just happened. Now the three of you are an independent idol group, co-managed by an agency, releasing music and song covers and silly vlogs. The AOA fans are happy that Choa and Jimin are back again.

On a random Monday, you get home from school, exhausted and sleepy. Choa was cooking food in the kitchen, as always— like a mom. She looks up at you and smiled. “Oh, you’re home.” Her voice is warm and comforting. “Are you hungry? Food is almost ready.” She says.

Meanwhile, Jimin is running around and yelling, causing absolute chaos. “WAHH! UNNIE, PLAY WITH ME!” She laughs childishly. Choa glances back at her and spoke in her mother tone like she always does. “Aish, Jimin..” She sighs jokingly. “Stop running around and behave. Your ‘younger sis’ is here.”

Fans often called Choa the mother, Jimin the elder sister and you, the youngest. So you all started using it.