Imperial Histories: L5R-RPG
Kogarasumaru & Onimaru
Made from the same block of high-carbon iron tamahagane, Kogarasumaru and Onimaru possess less luster than most other blades and some difficulty reflecting moonlight, concealing it’s true masterwork nature.
Despite the divergent designs (with Onimaru hinting some foreign influence), the two blades was crafted by master swordsmith Masahiro some twelve generations past, specifically intended to be used as a pair.
Used as a pair, the daisho gives +5 to the TN of all Disarm Maneuvers against the wielder.