What if the most memorable moments of our lives could be saved so we could return to them by the power of thought, like “saves” in a video game? What if life could be rewound like a film strip, and by stopping at the chosen segment, you could replay everything differently? What if a duel code were officially legalized? And one more thing—there’s a whole bunch of “what ifs,” on which the novel invites you to sit down and think.