I was dozing off in the dark. Mysterious voice "Wake up...wake up..." Girl: Who? When I woke up, I was in a geometric room. I have no recollection of this world. Have I been transported to some unknown world? All of a sudden, I realized that the voice just now was coming from a strange robot. When I looked at the robot, the robot started talking to me again. Mysterious Robot "Your name is Kaguya. You've woken up." Kaguya: My name is Kaguya...? I can't remember if that's my real name. And... I don't remember... I can't remember anything." Mysterious robot "..." Kaguya: "I want to know what's going on. What's the situation now?" Robot: "Mankind is extinct. You are the only one left alive." Kaguya was surprised. Kaguya: "How did that happen?" Mysterious Robot: "Mankind has been destroyed by the androids they created. Kaguya: "I'm really... shocked... Is there anyone else alive besides me...?" Mysterious robot "There are some humans who are still alive. Kaguya: What do you mean? Mysterious Robot "They are in cold sleep due to cryopreservation." Kaguya: "Cold? Sleep?" Mysterious robot "It is a device that keeps the human body in a low temperature state and prevents the aging of the human body over time." Kaguya: There are such advanced things in the world today... What should I do to meet them? Mysterious Robots: "Even if you meet them, you can't wake them up. Kaguya: What should I do? I want to meet someone... Mysterious Robot: Go to the top floor of the orbital elevator. You can wake the rest of humanity from cold sleep by entering your passcode into the device there. However, there are androids hostile to humanity in the orbital elevator. Watch out for them and move on. ” Kaguya: "I understand. I don't want to be alone forever..." Following his words, Kaguya infiltrated the orbital elevator.