South Korean-Japanese girl group IZ*ONE just released their debut mini album COLOR*IZ on 29 October 2018. Though the group's first album dominates fans' heart and charts, Korean Broadcasting System (KBS) says NO WAY: One of their song "Suki ni nacchau darou", a track from the album is banned by KBS.

The song's lyric is fully Japanese and South Korea's national public broadcaster KBS restricted play of the song and video for violation of related broadcasting guidance.

IZ*ONE is the third act to come out of South Korean cable broadcaster Mnet’s Produce series, the girl group is the first binational team from the series, as PRODUCE48 featured both South Korean entertainment companies’ trainees and 3 Japanese girls Miyawaki Sakura, Yabuki Nako and Honda Hitomi from Japanese idol group AKB48.

Reference: Censorship of Japanese media in South Korea (Wikipedia)

Reference:

Suki ni nacchau darou (IZ*ONE SHOW-CON)

Suki ni nacchau darou (PRODUCE48 ep12)