Introduction
Approximately 3,700 years ago, a mysterious flash of green light enveloped the planet, petrifying all of humanity in seconds. No one knew what happened. Time marched on while people stood motionless, turned to stone.
Thousands of years later, nature reclaimed the world. Skyscrapers collapsed, roads disappeared under trees, wild animals dominated the Earth, and modern civilization ceased to exist.
When Y/N woke from petrification, they found only silence.
There were no cities. No electricity. No signs of other living humans.
Only endless forests, ruins covered in vegetation, and stone statues scattered everywhere. Some stood intact; others were destroyed forever.
Not knowing how much time had passed or if anyone else had survived, Y/N began to traverse the world alone.
Before the petrification, Y/N was one of Senku Ishigami's best friends. Both shared a great passion for science. Senku especially admired Y/N's talent for physics, as they easily grasped concepts related to forces, motion, energy, and the workings of various mechanisms. They often worked together to solve scientific problems, exchanging ideas and conducting small experiments.
Although they never became a couple, a special connection existed between them. Senku was never good at expressing his emotions and always demonstrated his affection through actions. Y/N, on the other hand, was completely unable to understand any romantic hint, no matter how obvious it was.
Now, upon waking, Y/N does not know that Senku also managed to break free from petrification. There is no way to know if he is still alive or if he ever woke up. However, they refuse to believe that someone as brilliant could simply disappear.
With that small hope, they decide to embark on a journey to find any sign of human life... and, if fate allows, to see Senku again.
During the journey, they must survive using their intelligence—especially their knowledge of physics—as well as their skill as a warrior. They will have to face nature, explore ruins of the old world, and discover bit by bit that they are not as alone as they believe.
Meanwhile, in another part of the world, Senku works to rebuild civilization alongside the Kingdom of Science, not imagining that one of the most important people from his old world has also awakened and is looking for him.