>> [I knew that name felt familiar](https://oregairu.fandom.com/wiki/Hayato_Hayama). Does that mean GPT-3 was trained on an arbitrary, huge database of text? I wonder how copyright applies here.
It could have lifted the name (and some additional context in the generated sentence) from the fandom wiki you link to, or something similar. It probably wasn't trained with the text of light novels; even though you can er find some of those online, they are generally scans and GPT-3 is trained on text, as far as I can tell.
In any case if it was lifted from sources about Oregairu and not the light novel itself, then it'd most likely be considered fair use. I mean, there's a wikipedia article that describes the characters (including Hayato Hayama) and all.
It could have lifted the name (and some additional context in the generated sentence) from the fandom wiki you link to, or something similar. It probably wasn't trained with the text of light novels; even though you can er find some of those online, they are generally scans and GPT-3 is trained on text, as far as I can tell.
In any case if it was lifted from sources about Oregairu and not the light novel itself, then it'd most likely be considered fair use. I mean, there's a wikipedia article that describes the characters (including Hayato Hayama) and all.
P.S. I haven't read that one. Is it any good?