Rashinban Tanken

The Rashinban Tanken reffers to a set of four blades that when used together create a powerful barrier. The first of the Rashinban Tanken looks like a bowie knife  and possess the character for North (北, Kita) on it. The second resembles a kris that has the character for East (東, Azuma) on it. The third resembles a baselard and has the character for South (南, Minami) on it. The fourth and final one resembles a cinquedea and has the character for West (西, Nishi) on it.

While the main purpose of the blades are to be used together to create a barrier, each of the four Rashinban Tanken is a formidable weapon by itself and can be infused with chakra in a manner similar to Asuma's trench knives or Sanger's double-bladed sword.

Trivia

 * It is currently unknown where these daggers originate from nor where Sanger got them