What defines the blade profile of a ninjato sword?
Updated Feb 2026
The blade profile of a ninjato is its most defining characteristic: a straight or near-straight edge that runs from the base of the blade to the tip without the curvature (sori) found on a katana or tachi. This straight geometry gives the ninjato a distinctly different visual identity - angular, clean-lined, and geometric where the katana is curved and organic in its flow. The tip (kissaki) of a ninjato blade typically terminates in a squared or chisel-like point rather than the sweeping curved point found on a curved katana, reinforcing the overall straight-line aesthetic. From a collector's perspective, this blade profile is exactly what attracts buyers to the ninjato category: it introduces a genuinely different visual form into a collection dominated by curved blades. Each blade in this collection is hand-forged and individually finished, so there are subtle variations in surface detail and temper line character from piece to piece.