Ok, I've read many conflicting FAQS and youtube videos on this.
My question is simply: What is the exact laundry list of loot I need to find and sell in order to obtain the tournesol, masamune, and stone blade all in one go with maximum efficiency??
I understand that I could "share" items between separate swords, right? Meaning, if I sold 3 gemsteels, the remaining ingredients for tournesol, and the remaining ingredients for masamune, then the gemsteels would count toward both swords. is this accurate?