[Machine Translation] From this point on, there is no going back. [The underworld is still full of dangerous mysteries, but that is why it is also full of the allure of exploring the unknown. The neighbor of the apartment where Sorayoi lives, whom she sees by chance, has a funny wrist! And dangerous voices coming from the next room...! From here on out, there is no turning back. It's a two-girls-only survival of a bizarre expedition! Includes a special SS newly drawn by the original author, Iori Miyazawa!