Light Novel (Other) Eve's Descendants Tomorrow Yuri Matsuzaki short edit Sogen Japan SF Series

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In the face of the ultimate choice, human beings are tested for their souls -- stories of the future chosen by those who have encountered the various ultimate scenes. Five books in total, including a young man obsessed with the proof of long-outstanding mathematical predictions, "Irresistible Attraction," who follows the path of an adventurer who has devoted his whole life to cryptanalysis, and a who claims himself to be a future and works to build a time machine to return to the future in a prison lacking materials and resources, "Escape to the Future."