The Longsword is part of the starting equipment for the Vagabond class. Players who start as a different class can purchase the Longsword from the Twin Maiden Husks at Roundtable Hold for 1,000 Runes.
This will allow you to get the Longsword as a starter gift. If you start the game as a different class, you can still obtain the Longsword down the road. This straight sword can be purchased for ...