Issen: Flowing River Blade

After setting up in the Issen Stance, the user gathers chakra until their sword glows a bright blue. Then, they wait until their opponent attacks them. Upon rejecting their attack, the user slashes towards their opponent and cuts through them, a blue trail following their sword. Similar to ordinary Issen, the user can attack every other enemy until all are struck. However, unlike ordinary Issen, the trail of chakra serves an important purpose. The chakra trail has the ability to increase the range and power of the slash, as well as damaging the muscles within proximity of the wound. This makes even a nick on the side a paralyzing and incredibly painful wound, which can open up more from the chakra. This technique is best used when outnumbered and overpowered. However, great speed is needed, and ordinary agility may not be enough to overcome the chakra trail's short 8-to-10-second life.