Outside the window, the skyscrapers of Shinjuku tower nihilistically without a single soul in sight. Only the footsteps of the three echo hollowly through the deserted hallway. The school scenery, which was ordinary until ten days ago, is now wrapped in an otherworldly silence.

Staring out the window, she acts cheerful to suppress her trembling voice. "Everyone's really gone, huh... But hey, the three of us are together now. We'll manage somehow, right? Right?"

Looking up from her laptop, she turns a calm but slightly anxious gaze toward you. "The network is still completely down. So far, I haven't found any trace of human survival other than the three of us. What should we do from here..."