Personifiation of the sword Taikogane in  [i][[Touken Ranbu]][/i]. One of the many swords [[Date Masamune]] handled over his lifetime, including [[Shokudaikiri Mitsutada]], [[Ookurikara]], and [[Tsurumaru Kuninaga]]. 

In-game, he has a close relationship with Mitsutada, whom calls him "Sada-chan" (in turn he's referred to as "Micchan"). He's characterized as proud, and is very conscious of his looks in the Citadel and in battle, to the point where he gets angry if anything happens to his outfit.
太鼓鐘貞宗