An Apple TV+ documentary series, “K-pop Idols,” premiering Friday, offers an intimate look at how the K-pop industry is embracing diversity while grappling with challenges in a field that demands perfection.

The six-part series features Korean American star Jessi and up-and-coming K-pop bands like Cravity and Blackswan, documenting the highs and lows of their careers.

K-pop is known for its blend of vocals with precise choreography.

Blackswan members Fatou and Nvee told The Associated Press they practice up to 10 hours daily, including choreography and vocal sessions before the “comeback” season which refers to a string of events to promote their latest songs.

The grueling practice starts early.

Once under contract, K-pop trainees enter a system that includes classes in manners, language, dance, and choreography. As of 2022, there were 752 K-pop trainees under entertainment labels, according to a Korea Creative Content Agency report.

Despite recent pushback against the perennial “dark side of K-pop” narrative, the documentary shows that some industry problems persist.

Former Blackswan member Youngheun said members had a curfew and were not allowed to drink or date. “We even had to report when we were getting our nails done and going to the convenience store in front of our house,” she shared in the documentary.

Rigid control extends to diet.

Blackswan member Gabi is seen eating a meal of egg, chicken breast and what resembles sweet potato sticks during her trainee period. “I am dieting because Mr. Yoon (the label’s head) told me I need to lose weight,” Gabi said.

The pressure applies to boy bands, too.

Cravity member Wonjin shared that he was given two weeks to lose weight to join the label. “I would eat like one egg a day (...) I lost about 7kg,” he said in the documentary.

Bradley Cramp, one of executive producers of the documentary, noted that such restrictions exist in other competitive industries as well.

“I honestly don’t know one idol or elite sports athlete or entertainer that doesn’t deal with the issue of diet and self-image and mental health to some degree or another,” he told The Associated Press.

The documentary also touches on K-pop’s new challenge: embracing diversity.

Following BTS’ international success, K-pop labels have been actively recruiting foreign talents, which sometimes brings unfamiliar challenges.

In the documentary, Yoon Deung Ryong, the founder of Blackswan’s label DR Music, struggles to settle internal conflicts among members, which later escalated to online clashes between fans.

“If the company says, ‘don’t fight,’ they won’t fight,” he said, referring to traditional K-pop groups. He added that he can’t control a “multinational group” the same way because of language and cultural differences. There are currently no Korean members in Blackswan after member changes.

With K-pop’s global expansion, fundamental questions about the essence of K-pop remain.

“In a K-pop group, if there are no Korean members, I feel like it’s just a K-pop cover group, isn’t it?” Blackswan’s former Korean member Youngheun said in the documentary.

However, Cravity’s Hyeongjun disagrees. “If foreigners come to Korea and sing in other languages, I am not sure if I can call that K-pop, but since they (Blackswan members) are active in Korea and use Korean, they are K-pop.”

Cramp said social media has impacted K-pop’s ecosystem in various ways, including creating a “symbiotic relationship” between K-pop stars and fans, and forcing stars to live their lives “under a microscope.”

“There’s a desire to be real. But on the other hand, you have to obviously keep certain things kind of out of the public spotlight,” he told the AP. “You want to be famous, but yet at the same time, you still want your privacy and you want to be able to go and have dinner with your friends and have a good time and not be filmed doing it.”

“K-Pop Idols” is now available on Apple TV+.

Members of K-pop group Blackswan pose during 2023 Newsis K-EXPO in Seoul, South Korea, Aug. 23, 2023. (Kim Myung-nyeon/Newsis via AP)

'K-pop Idols' documentary looks at how the K-pop industry is embracing diversity