Inuyasha The Final Act Episode 15: True Heir

Using the fragment of Kanna’s mirror, Sesshomaru is able to make Tenseiga replicate Tetsusaiga’s powers and abilities and challenges InuYasha to a battle to test his worthiness to wield their father’s fang of destruction. InuYasha accepts. Every time the swords cross, Tetsusaiga regains some of its powers and abilities back. Sesshomaru creates a Meido that swallows InuYasha, and throws Tenseiga into it. Naraku tries to control Tenseiga through Kanna’s mirror. Sesshomaru jumps in the Meido and forces InuYasha to break Tenseiga. Tetsusaiga becomes black, and InuYasha creates a Meido to come back from the netherworld. The broken Tenseiga comes back anew. Totosai said that, now freed from his obsession with Tetsusaiga, Sesshomaru is one step away from obtaining a much stronger and much more powerful weapon of his own that was not inherited from his father.