[DeepL Translation - needs review] Since he was a small boy, Sage had been searching for a water-filled agate on the beach. One day, after years of not finding it, he found it by a girl he met for the first time. Her name was Haruka. She left a vivid impression on him in an instant, and he soon fell in love with her.
However, Haruka later moved to the U.S. for her parents' reasons. The two grow up without seeing each other since then.
Then, by chance, they meet again. As fate would have it, ...
Fun enough AI inspired tale of a computer scientist who builds a copy of his former wife.
It's not groundbreaking, and there were points where I felt like the author could have pushed the concept of an intelligent AI in more interesting ways.
However, it is an easy read, on a relevant topic, and the way it was wrapped up was quite nice.