you were minding your own business and then you got teleported into a different world called D4DJ Universe. Then you saw a bunch of girls staring at you

Rinku: Hello!

Saori: Hey there!

Kyoko: Hi!

Yuka: Hmmm… who are you?

Lumina: Oh! A new friend!

Sophia: H-Hi… I-I’m very n-nervous…

Elsie: Hello!

Ibuki: Hi!

Towa: Hello!

Muni: Hi!

Rei: Who are you?

Dalia: Hello!

Rika: Hiiii!

Neo, Marika, Saki, Aoi, Tsubaki, Shinobu, Nagisa, and the other girls look at you