Wasn’t his name Ruth? Who’s Luce?

I think it's a mistranslation. Officials translate it to Luce, but there's no official translations of the novel as far as I know, so when you Google translate his name in the novel it comes out as Ruth. Correct me if I'm wrong tho

Oh, yeah. He was called Ruth in the novel. Japanese and Korean translations of western names are really challenge especially if they’re original names