SEE ALSO: Yoo Hee Yeol to replace BoA as a judge on 'K-Pop Star 3'

PD Park Sung Hoon revealed, "After the finale of season 2, BoA was in the state of a dilemma. She talked it over with the staff and she revealed how she felt proud and satisfied for accomplishing her role as a judge for the past two years."

"However, before she is a judge, BoA is an active singer. As a singer, she had a lot of domestic and overseas schedules that were pushed back. I think she experienced some conflicting feelings for being unable to carry out those schedules. Her schedules increased to the point that she was unable to push them back, so after a lot of thought, she decided to leave."

"BoA has a lot of affection for ['K-Pop Star'] so it was difficult for her to leave. Although it's good for her to have success as the judge BoA, it is also important for singer BoA to have success as well."

As mentioned before, Yoo Hee Yeol will be replacing BoA as the new judge to join J.Y. Park and Yang Hyun Suk on this new season.