I am having some trouble. In my playthrough, Bors' inventory seems to be glitched. Whenever the game tries to load his inventory (Item, Trade, or the preparations screen) the game freezes. It might be worth noting that I gave him Gant's lance, but when I tell him to attack, I cannot see it as an option. Perhaps that's related. I included a savestate, so you can test it yourself.
Fire Emblem - Fuuin no Tsurugi (Japan)1.sgm