I□U

I□U
Type	Mini
Artist	IU
Released	December 14, 2011
Format(s)	CD, CD+DVD
Length	24:46
Label(s)	EMI Music Japan Inc.
Release chronology
Previous	Last Fantasy
Next	"Good Day"

I□U is the debut Japanese mini album by IU. It was released on December 14, 2011.

Track list

1. "Good Day" - 3:56
2. "Nagging (コ・ゴ・ト)" (with Seulong) - 3:37
3. "Rain Drop" - 3:50
4. "Lost Child" - 3:44
5. "The Story Only I Didn't Know (私だけ知らない)" - 3:27
6. "Last Fantasy" (Bonus track) - 6:10