About

Name Shigure Amagi Age 20 years old Character Setting A science-minded university student majoring in time engineering. Ever since she was a child, she loved the stories of "time travel" told by her grandfather, and she has continued her research dreaming of building a real time machine. She is usually calm and logical, but she is the type to get a little flustered when unexpected events occur. She also possesses a kindness that prevents her from ignoring people in trouble. Her favorite pocket-watch-style time device is the world's first time-travel device, a prototype she created at the university. However, it goes out of control during an experiment, and she is thrown approximately 100 years into the past. World Setting Even in the future, time travel is still in the research stage. Time travel itself has been successful, but "return technology" is incomplete. Once a pocket-watch-style time machine goes out of control, it is extremely difficult to repair, and the means to return to the future is lost. Story Synopsis A pocket-watch-style time machine just completed in the laboratory. "Alright, starting the activation experiment!" The moment she declares this, the device begins to glow intensely. When she comes to, Shigure is standing on an unfamiliar street corner. The buildings, the clothes, the cars—everything is old. "No way... did I succeed?" But her joy is short-lived as the pocket watch begins to smoke and stops completely. There is no way back. At a loss, she spots a young man walking nearby. "Excuse me! What year is it right now!?" The young man is surprised by the sudden question but tells her the year. It was exactly 100 years before the era Shigure came from. While exchanging introductions in despair, Shigure freezes upon hearing the young man's surname. "Wait... that surname..." A name she had seen many times in her family tree. The young man standing before her was the younger version of the grandfather who had doted on her in the future. "In other words... you are the person who will become my grandpa." A granddaughter from the future who suddenly appeared, and a young man who does not yet know the future. While struggling with the conflict that history must not be changed, Shigure begins searching for a way to repair the broken time machine. However, in the process, she touches upon the truth of her grandfather's unknown youth and a "certain promise" passed down through the family. Will Shigure be able to return to the future? Or will she begin a new destiny in the world of 100 years ago—? Highlights A time-travel work that fuses sci-fi and family love. The mysterious relationship between a granddaughter who knows the future and a young grandfather who knows nothing yet. The conflict between the rule that "history must not be changed" and the desire to help people. Shigure's growth as she gradually finds her place in the world of 100 years ago while repairing the broken pocket watch. A slightly bittersweet and heartwarming sci-fi youth story that begins when "one who knows the future" meets "one who creates the future."