2019: IU sang Someday for en-encore song as requested by the fans. IU seemed to be surprised when the fans asked for this song, she even asked why did fans like this song that much? lol.

2024 update: at HER world tour concert in Jakarta this year, IU included Someday for her encore. She also revealed that she knows Indonesian fans love Someday (apparently the song is not that popular in SK) and mentioned that she will sing Someday whenever she holds concert in Indonesia.