Select "Extras" at the main menu, then the "Preorder" option. Enter one of the following codes to activate the corresponding cheat function.

360152 - Sora Katana of the Katakara Clan
360378 - The Lost Blade of the Kusagari Clan
58855558 - Nihonto Hana Sword
3582880 - Barracuda
370402 - .357 Magnum, The Tataro