Sekai de Ichiban

Sekai de Ichiban is the sixth major single by Inoue Sonoko.

CD

 * 1) Sekai de Ichiban (せかいでいちばん)
 * 2) Sekai de Ichiban (せかいでいちばん) (Acoustic ver.)
 * 3) Sekai de Ichiban (せかいでいちばん) (Karaoke ver.)

Limited Edition DVD

 * 1) Recording & Photoshoot Making Video
 * 2) Sale Special "Sekai de Ichiban Koishitai!" Renai Ouen Project!
 * 3) First Date (Bon Odori ver.) (From "Inoue Natsu Matsuri 2017")
 * 4) Kimi ga Ireba OK! ～Samasama Kyunkyun Daisakusen～ (From "Inoue Natsu Matsuri 2017")