Sesshoumaru has never approved of his half-demon younger brother Inuyasha inheriting their father's prized sword, Tessaiga, while he was left with the restorative Tenseiga blade. Upon learning that even Tenseiga's one destructive technique—which he himself perfected—was designed to be transferred to Tessaiga, Sesshoumaru grows even more bitter as he feels disowned in favor of an unworthy mongrel.

Meanwhile, Inuyasha's archenemy Naraku unscrupulously takes advantage of Sesshoumaru's grievance to tempt him with a means of stealing Tessaiga's powers. Pitted against each other, the siblings cross blades in a fight that will decide whether Inuyasha will thwart Naraku's dirty scheme and earn Sesshoumaru's acknowledgment or die at the hands of his own flesh and blood.

InuYasha: Kuroi Tessaiga adapts chapters 499-504 of the manga and was screened at Rumiko Takahashi's picture exhibitions across Japan, featuring the original voice cast from the television series. The special was later adjusted into InuYasha Kanketsu-hen's 15th episode.

The OVA was released on Blu-ray and DVD in Japan on October 20, 2010.