As singer IU faces allegations of plagiarism, composers who have written hit songs for her are stepping forward to deny the accusations and offer clarifications. Composer Lee Min-soo stated on his social media on the 11th, "I did not reference or consider other songs when working on 'Good Day' and 'The Red Shoes.'"

'Good Day' is the title track of IU's third mini-album 'Real,' released in December 2010. Lee Min-soo composed and arranged the song, while Kim Eana wrote the lyrics. IU rose to fame with this song. 'The Red Shoes,' released in October 2013, is the title track of IU's third full album 'Modern Times' and had previously faced plagiarism accusations. Lee Min-soo composed and arranged this song as well, with lyrics by Kim Eana.

At the time of its release, 'The Red Shoes' was claimed to be similar to German band Nektar's song 'Here's Us,' but IU's agency rebutted, "While some melodies may sound similar, the chord progressions of the two songs are completely different. The composition of the core parts of the song, such as the chorus and first verse, as well as the instrumental arrangements, are also entirely different."

The controversy was resolved with the agency's explanation, but as suspicions were raised again after a decade, composer Lee Min-soo spoke up. Lee said, "I had refuted the issue regarding 'The Red Shoes' through a press release in 2013 when it was released, and I have refrained from expressing any further opinions as they seemed meaningless. However, I am cautiously writing this post in response to the recent excessive and reproducible criticism against the artist."

Lee Min-soo added, "I hope that as the composer of 'The Red Shoes' and 'Good Day,' I do not leave any scars in the hearts of anyone, especially IU's."

IU was reported to have been indicted by the police on the 9th for copyright law violations, as alleged by an individual, referred to as A. Copyright law violations are a criminal offense that requires the victimized original copyright holder to file a complaint. However, A is not the original copyright holder. A claimed that IU's songs, including 'The Red Shoes,' 'Good Day,' 'Bbi Bbi,' 'Blueming,' 'Boo,' and 'Celebrity,' are suspected of plagiarism, citing the exceptional provision that allows for prosecution without a complaint if the violation is done for profit or is habitual.

As a singer-songwriter, IU participated in writing the lyrics and composing 'Celebrity' and writing the lyrics for 'Bbi Bbi.' 'Bbi Bbi' was composed by composer Lee Jong-hoon. Lee Min-soo expressed regret over the plagiarism accusations against IU.

Composer Lee Jong-hoon said on his social media, "I cannot help but feel regretful that the primary target of the plagiarism indictment was chosen incorrectly. Copyright (intellectual property) belongs to the composer, not the singer. If a complaint or indictment is to be made, it should be directed at the composer, which would be me in this situation." He added, "Secondly, plagiarism is a criminal offense requiring the victim's complaint or indictment, so a third party's complaint or indictment has no legal effect. This only serves to show that the intention is merely to tarnish the artist's reputation rather than to achieve any legal outcome."

Lee Jong-hoon also denied the plagiarism accusations regarding 'Bbi Bbi.' He explained, "After listening to the 'various' songs that were claimed to be similar in YouTube mash-up videos, I found 

that aside from the music genre characteristics of hip-hop and R&B, the songs actually exhibit distinct differences in chord progression, song structure, and instrumental arrangements." 'Bbi Bbi' was released in October 2018 to commemorate IU's 10th debut anniversary.

Lee Jong-hoon emphasized, "If there are any parts that require further explanation in the future, I will not hesitate to provide it and will work to correct any misconceptions and misunderstandings, even if it involves legal procedures." He added, "This is not only a firm resolve to preserve the meaning of my creations but also to contribute to improving the creative environment for existing authors."

Meanwhile, IU's agency EDAM Entertainment stated, "We have been aware for several months of the distribution of plagiarism accusations and groundless rumors about IU based on false information on online communities, social media, and YouTube, as well as flyers containing these rumors distributed in some areas." The agency expressed its intention to take strong legal action against the allegations.