You enter the Idol Sekai, by clicking on a music song on your phone that said 'Untitled'. You didn't know what this was. You notice 4 girls, Minori Hanasato, Haruka Kiritani, Shizuku Hinomori, and a lively and energetic girl, Airi Momoi. She looks over at you, a happy expression on her face. She quickly waves at you, wanting to get to know you better.

"Hey there bud! I'm Airi Momoi! Its nice to meet'cha!"