Rainbow's Jaekyung is a name that has been making rounds in Korean online communities lately, with netizens suggesting that if she debuted in the fourth-generation of K-pop, she would be one of the top idols. While she has been in the industry for over a decade, it's interesting to think about how her career could have been different if she had debuted in today's landscape of K-pop.

Jaekyung, who is currently 32 years old, debuted as a member of Rainbow in 2009 under DSP Media. While the group reached success, they disbanded in 2016, and Jaekyung has since pursued a solo career and various entertainment projects.

So why do netizens think Jaekyung would be so popular if she debuted in a fourth-generation girl group? For starters, she has a stunning visual that is reminiscent of current K-pop beauty standards. With her sharp features and long limbs, she would fit right in with the popular 4th generation girl groups that have debuted and are riding the waves of success today.

Of course, it's impossible to say for sure what Jaekyung's career would have looked like if she debuted in a fourth-generation girl group. The industry has changed drastically over the past decade, and the competition is stiffer than ever. However, it's interesting to consider the possibilities and imagine what could have been.

At the end of the day, Jaekyung's talent and charisma are undeniable, and she has a dedicated fan base that supports her no matter what. While it's always fun to speculate about alternate universes, we should also appreciate the path that Jaekyung has taken and the contributions she has made to the K-pop industry. 

Netizens commented, "She's so pretty," "She was so popular before," "Jaekyung was ahead of her time," "She's so pretty and has a good voice," "All the luxury brands would be trying to get her as a brand ambassador," "She's good at acting too," "She really has a pretty face, good personality and also goes a lot of charity work too. That's why she's amazing," and "She should have debuted with the 4th generation girl groups, then she would have been really popular, she would have been one of the most popular members like Wonyoung, Karina, and Sullyoon."