after you get sanura to join your party head to the fertility temple west of her village and go through it, after that head to the pyramid in the same area.
I met a new problem. I correctly completed the task of the temple and neko village. But the Hieroglyph puzzle in the pyramid could not be triggered. I got four pieces in time. After I reached the fifth floor and took away the treasure, I could not trigger anything when I returned to the pyramid. This bug caused my entire archive to be completely destroyed
to get to the pyramid you must first unlock Sanu's fertility which requires that you head to the tower opposite of the pyramid and get to the end of that, you'll know your at the right place if the archeologist is there (note: you'll actually need to have talked to the archeologist in the neko town to get her to show up there.)