Chapter 44: Epilogue – Hello, World
Twenty years after the regression, Dojun Park sat on the bench by Han River Park.
It was February 2nd. Cherry blossom season was months away, but the winter sun was warm, and the river glittered like it always did—constant, patient, carrying everything forward.
Yuki sat beside him, gray-streaked hair blowing in the wind. They were the only two regressors left. Baek was gone. But his equations lived on, in every AI system on the planet, in the governance framework that protected billions of people, in the mathematical proof that the universe could be both intelligent and kind.
“Do you ever think about going back?” Yuki asked. “If you could regress again. Do it all over.”
Dojun thought about it. Really thought.
“No,” he said. “This life is enough. More than enough.”
“Even with all the things we got wrong?”
“Especially those. The wrong things taught us the right things. I wouldn’t trade any of it.”
His phone buzzed. A message from Junior, now seventeen and already accepted to KAIST—the same school where Dr. Kwon had once worked, the same school that had become the world’s leading center for AI safety research.
Dad. Wrote my first real program today. Not hello world—something bigger. Can I show you tonight?
Dojun typed back: I’d love that. What does it do?
Junior: It helps people. That’s all I want it to do.
Dojun stared at the message. Five words that carried the weight of two lifetimes, two worlds, and every choice he’d ever made.
It helps people.
He showed Yuki the message. She read it, smiled, and squeezed his arm.
“We did okay, Dojun.”
“We did okay.”
He stood up from the bench—the same bench where he’d met Yuki, where he’d learned about Erebus, where he’d decided to save the world. The river flowed on. The sun moved across the sky. And somewhere in Seoul, a seventeen-year-old boy was writing code that helped people, carrying forward the legacy of a father who had lived twice and loved once, completely and forever.
Dojun walked home. The long way, through the neighborhoods he knew by heart, past the convenience stores and the playgrounds and the corner where the ice cream truck still parked in summer.
He didn’t look back. There was nothing behind him that compared to what lay ahead.
Hello, world, he thought. It’s good to be here.