Genre: History

Inuyasha fights Ryukotsusei with Tetsusaiga's ultimate attack: The Backlash Wave!

Totosai tells Inuyasha that piercing the heart of Ryukotsusei, the demon that gave his father his mortal wound, will make his Tetsusaiga lighter. Inuyasha then decides to kill Ryukotsusei.

Inuyasha, once again, transforms into a demon when faced with Gatenmaru's murderous attack against himself, Miroku, and the helpless women of a village. Sesshomaru then appears to see if what Boku'seno told him about demon Inuyasha was true.

Sesshomaru learns from the wise tree-demon, Boku'seno that when Inuyasha transforms into a demon, his demon blood takes full control turning him into a mindless killing machine. Elsewhere, Inuyasha and the others arrive at a village that is ruthlessly being held under the control of the Moth Demon, Gatenmaru and his band of thieves.