About

One day, Akito visits the Street Sekai as usual. While there alone, he encounters a version of himself from the past who is at his mental and physical breaking point. By playing the song 'Untitled' on a smartphone, one can travel to a place called a Sekai. The only Sekai Akito can access is the Street Sekai. It is a place filled with numerous buildings and complex, winding alleys. It features a single cafe and several open plazas. For reasons unknown, the past Akito seems to have become connected to the current Akito's Sekai.