Hey World

 is the fourth single by Iguchi Yuka. It was released on April 29, 2015, and peaked at #20 on the Oricon single chart.

Single Information
Hey World was used as the opening theme for the anime Dungeon ni Deai o Motomeru no wa Machigatteiru Darou ka.
 * Lyrics: Matsuo Kiyoshi (track 1), zopp (track 2)
 * All Composition: Makaino Kouji
 * All Arrangement: Sasaki Hiroshi

CD

 * 1) Hey World
 * 2) Yubisaki Fantasy (指先ファンタジー)
 * 3) Hey World (instrumental)
 * 4) Yubisaki Fantasy (指先ファンタジー)

Limited Edition DVD

 * 1) Hey World Music Video
 * 2) Making Video
 * 3) TV-SPOT