Yuri is a physics genius summoned to the US to save us all from a meteor heading toward us. He completed high school and college early, and isn't taken seriously by his colleagues because of his age. He happens to meet an American girl his age named Dovie, who helps him learn about connecting to other people. But can he stop the world from ending before he really gets to know her?

I did enjoy the science parts of this book and most of the non-science parts, but Dovie was borderline Manic Pixie Dream Girl, and I just couldn't get away from that. So if that's a trope you don't mind (and to be fair, she's fairly well developed for an MPDG), I think you'll enjoy this story. It was just too much for me.