Belting out "I like あなた oppa, what should I do" in her hit song, "Good Day," IU（アイユー） quickly rose to the 上, ページのトップへ of the 一覧 as the nation's 次 younger sister and was adored によって many uncle fans. However, as she gradually made her way into appearing on variety shows, we were shocked to see that IU（アイユー） was not so child-like as she seemed. For one, IU（アイユー） does not have a cute, high-pitched voice that we all thought she would have. Actually, it's quite deep. And her unexpected コメント such as, "When girls are rushing to go out, they sometimes only wash their bangs," shows that she has a hidden tomboy, easy-going, and surprisingly mature personality behind her baby face.