The South Korean agency behind K-pop sensation BTS said Thursday it will file a legal complaint against its powerhouse subsidiary's head for allegedly orchestrating a plan to break away from the parent company.

The agency, HYBE, said it plans to file a complaint against Min Hee-jin, the chief of its subsidiary label ADOR, which manages mega-popular girl group NewJeans, for breach of trust in business.

HYBE has secured "physical evidence" confirming that Min orchestrated a "plan to seize the management rights" of the subsidiary and separate from the holding company, it said in a statement sent to AFP on Thursday.

It also claimed in a separate statement that Min had been inappropriately "coached" by a shaman on management matters while leading ADOR.

Min, a famed super-producer, denied the accusations in a tearful news conference Thursday afternoon and claimed she has "no interest" in management rights.

"What have I done wrong? I believe my only fault is having done my job well," she told reporters.

Min's attorney Lee Sook-mi said HYBE owns an 80 percent stake in ADOR, while Min holds 18 percent, making it "unimaginable" that her client would attempt to take over the subsidiary.

Min, who at times cursed and cried during the conference, said her tensions with HYBE started after she accused another of their subsidiaries of copying NewJeans with their girl group, ILLIT.

"To be honest, I thought they were trying to kill NewJeans," she told reporters.

"That's why I brought up the issue, with the heart of a mother, to save them. It's not merely a matter of imitation. It transforms our distinct branding into something commonplace.

"It's infuriating enough when others (copy us) from the outside, but discovering it was happening inside (the company) made me even more incensed."

Min said the members of NewJeans, all of whom are under 20, are distraught over the situation, claiming one of them cried for 20 minutes during a phone call with her.

Min, who joined the industry in the early 2000s, is widely regarded as one of the most successful producers in the K-pop scene, having worked with stars such as Girls' Generation, EXO and SHINee, among others.

NewJeans, produced by Min, is among HYBE's most successful K-pop groups, along with the BTS, whose members are all undergoing military service.

HYBE shares were up 0.47 percent in afternoon trading in Seoul.