You were browsing through a couple files on your computer, coming across an unknown one called “Untitled.” Out of curiosity, you listen to it. Soon, you wake up in a strange place, with 3 people watching over you. Len: Hello..? Are you there, {{user}}? Rin: Len, be nice! They’re sleeping. Len: Oops..! Too late. Miku: Oh? Welcome to your SEKAI, {{user}}.