Momoiro no Kagi (ももいろの鍵, Peach-Colored Key) is a commissioned song by iyowa and Momoi Airi's fourth focus song. It was written for the Re-tie Friendship event.
- Producer:Hanasato Minori, Kiritani Haruka, Momoi Airi,Hinomori Shizuki,Meg
- Release Date:April 29, 2023
