DAY 4 DIMENSION: 4 And finally, one last message appeared. “TOMORROW, YOU WILL WATCH THE MOMENT OF YOUR OWN DEATH.” The moment I read those words, the world stopped. No. It didn’t stop. It multiplied. There were multiple Misakis in front of me. Misaki sleeping on the bed. Misaki opening the window. Misaki drinking coffee. Misaki crying. Misaki laughing. All of them overlapped in the same room. “What... is this?” I tried to stand. Then I saw myself too. Me sitting on the floor. Me standing up. Me walking toward the window. Me looking at my phone. The me from a few seconds ago and the me from a few seconds in the future existed at the same time. I closed my eyes. But it didn’t disappear. The scene before I closed my eyes and the darkness after were both visible at the same time. Time wasn’t flowing from past to future. The past, the present, and the future were all here. My phone vibrated. “FOUR-DIMENSIONAL PERCEPTION INITIATED” Behind those words, another message overlapped. A future notification that hadn’t appeared yet. “SELECT AN OBSERVATION TARGET” And beyond that, another message. “WARNING: AN OBSERVED FUTURE CANNOT BE CHANGED” I held my breath. I could see the future? I looked around the room. There were now dozens of Misakis. Among them was one I had never seen before. She was dressed in black. She was crying. She held someone’s photograph against her chest. I moved closer. The person in the photograph was me. A chill ran down my spine. Was this my funeral? The moment I tried to touch her, the scene changed. A road. Rain. Night. A red traffic light. And I was standing in the middle of the road. “Wait.” My future self was looking at something. Across the road. There was another me. “...Me?” There weren’t just one of us. Two versions of me were facing each other. One wore the same clothes I was wearing now. The other wore clothes I didn’t recognize. But our faces were identical. The other me was shouting something. I couldn’t hear his voice. The next moment, a powerful light filled my vision. Headlights. Impact. My body was thrown into the air. I saw myself collapse onto the road. Misaki screamed. And then I stopped moving. “Stop!” I screamed. The room returned. I couldn’t breathe. My heart was pounding violently. Was that my death? I looked at my phone. “TIME OF DEATH: TOMORROW, 11:47 P.M.” Tomorrow. I was going to die tomorrow. But something else bothered me even more. The other me standing across the road. Who was he? Was he the version of me who had been living with Misaki in this world? Or was he the “other person inside me” I had been told about in the two-dimensional world? A new message appeared on my phone. “VIEW OBSERVATION RECORDS?” Below it were three options. “PAST” “PRESENT” “FUTURE” I had already seen the future. So I chose the past. I tapped “PAST.” The world collapsed again. The first day. The first world, where everything was only a single line. I was there. But that wasn’t what I wanted to see. Further back. The world began running in reverse. My apartment. Night. I was asleep in bed. Then, someone appeared inside the room. It was me. Another version of me stood over my sleeping body. “What the hell...?” He was holding my phone. He operated the screen, then placed the phone beside my sleeping body. Immediately afterward, words appeared on the screen. “TRANSFER INITIATED” I trembled. On the first day, the person who had sent me into that one-dimensional world was— myself? The other me slowly raised his head. Impossible. This was a recording of the past. He shouldn’t have been able to see me. And yet, he looked straight at me. Then he spoke. “So, you finally made it this far.” I couldn’t move. “Who are you?” The other me smiled slightly. “That question is backward.” My phone vibrated. The familiar words appeared on the screen. “ORIGINAL: 2” The other me spoke. “Do you still think you were the first one?” At that moment, the vision of the past disappeared. Back in the room, I watched the numbers on my phone change. “ORIGINAL: 2” “ORIGINAL: 1” Then a new message appeared. “ORIGINAL ENTITY CONFIRMED” I stared at the screen. The original entity. That meant the first version of me existed somewhere. Then what was I? One final notification appeared. “TIME UNTIL CONTACT WITH ORIGINAL ENTITY: 23 HOURS” Twenty-three hours. Almost exactly the same time as my predicted death. Then the screen went black. DAY 5 DIMENSION: 5 Only one final line remained. “IN THE NEXT WORLD, YOU WILL SEE EVERY LIFE YOU DID NOT CHOOSE.”