use the clear benonite on Ashfall, and talk to Sunstar. After that, I would recommend going to Death Valley, the Beach, and the “Forest” (in that order), defeating all the bosses there. (The bosses are the cats sitting in those areas.), and then going back to Sunstar to report to him what you’ve learned. You don’t have to do any of that in order if you don’t want to, but I found it the easiest. If ya need me to explain anything, just ask, I’m not the best at speaking.