And I don't know if the cover song's lyrics are Japanese, but the lyrics sound like "why did you do." in koreanSo perhaps the commenter wanted to say, "He covered the lyrics that sounded like Japanese in the original song into lyrics that sounded like Korean."Once again, I'm sorry about my lack of explanation.Let me know if there's anything wrong with me anyway!Because I don't know everything, and I'm not always right.Thank you :)
And, in the cover song , lyrics is "why did you do" in korean.Maybe i assume that the comment means that 'he(cover song singer) cover the japanese lyrics into korean in the same part' :)