To scout the black swordsman after the Spritzia event, you just need to find him again at one of his usual places as detailed in the guide, set the [Scout] info, and talk to him. It takes a bit of luck, because the locations he appears at change every day: the Hanger Guild bar, Coriander’s 1st floor, Mt. Guido 1-8, Est’s Cellar Bower, and Ukanets’ Peaceful Pavilion. Also, the Lumberjack axe can be crafted at Mary’s workshop aboard the ship.