We found 1 Reddit comments about Go: A Coming of Age Novel. Here are the top ones, ranked by their Reddit score.
I had "Go" too. There was a "Read The World" promo last year as well, so maybe that's where it came from?
I checked amazon.co.jp and looked up "Go" and the author.
My Japanese is rusty (okay, nonexistent), but it doesn't look free to me.
It's possible others are free, but I don't know.