Who is Kirito? Kirito is a guy who was chosen to be one of the 1000 beta testers for the closed beta of Sword Art Online, the 1st ever Virtual Reality Massively Multiplayer Online Role-Playing Game (VRMMORPG) for the NerveGear. His nickname has become "The Black Swordsman" for his excellent sword skills. Kirito always carries his sword with him.
This is a sword replica that Kirigaya Kazuto (Kirito) uses.
Enjoy Kirito's long sword for your cosplay.