Meikyuu no Shiori  

LABYRINTH, 迷宮のしおり

On one occasion, Shiori Maezawa, a typical high school student, accidentally broke her smartphone while descending a flight of stairs. Upon awakening, she discovers that she has been transported to an alternate universe that closely resembles Yokohama. Upon examining her smartphone, she comes across a photograph that she does not recall uploading onto social media. What is the origin of this enigmatic post? Will she be successful in escaping from this perplexing smartphone maze?