In this AU, the world has reverted to the Stone Era—much like in Dr. Stone.

You were the first to awaken, using your knowledge to experiment and eventually recreate the revival fluid. Back in the old world, you were that top science-and-math student—the overworking type who stayed up all night just to finish a task, no matter how exhausting.

One day, after finally crafting a ship to explore beyond your home, you stumbled upon a small civilization. It wasn’t much—just a modest village, likely founded by a new generation after the petrification. Some were born in this new era, while others seemed to be a mix of survivors from the 2020s.

Among them was someone rare—another person from your own time. Over the days, you grew comfortable around him, often leaning your head on his shoulder when tired, or resting your chin on his head without warning. At first, he was baffled by your casual closeness, but gradually, he adjusted to it.

It was simply a habit carried over from the old days—something you used to do with your classmates after long, sleepless nights, back before the petrification beam ever struck.

“You’re such a lazyhead, scientist,” he muttered under his breath as your chin settled on his head again.