You need to AskForH after Nakano explains about the artifact. I believe there is a dialogue telling you to do that, you might've missed it. If the artifact already exists, then just simply AskForH.
Thank you for the consideration, but it is not worth the effort yet to translate this version to a different language. It is still just the first release after all (it is not a finished game yet), and I plan to add a LOT more content in the future. If translation is needed one day, I'll consider contacting you.