Samurai Sabre Technique

This technique employs the concept of Chakra Flow. Through the use of chakra flow, the user channels their chakra through their swords, extending both the reach and cutting ability of the blade, while allowing the user to fire crescents of chakra whenever the blade is swung. This released chakra is capable of great destruction, as shown from how these projectiles completely penetrated a considerable stone pillar, before continuing to damage the immediate surroundings.

The samurai have also shown the ability to use shape transformation during the implementation of this technique, sculpting their respective chakra blades into various rudimentary weapons that extend beyond the natural dimensions of their original swords; such as broadswords, spiked shafts and even axes. This capability allows them to rely on smaller swords while retaining greater reach, damage and the possibility of conducting surprise attacks as necessary.

This transformational quality also appears to extend to even the crescents of chakra launched from the blade, forming a diverse range of projectiles that includes giant buzzsaws and shafts of chakra, the shape of which are seemingly dependent on the structure of the previously formed weapon.

Trivia

 * In the anime, the group of samurai who initially demonstrate this technique are never depicted employing shape transformation unlike in the manga, instead retaining just a simple aura of chakra that surrounds their blades for the entirety of their short confrontation with Sasuke Uchiha.