Episode 52

The Demon's True Nature is the 52nd episode of the InuYasha anime.

Summary
The bandits have camped around the town, and are enjoying saki while waiting for Miroku and Inuyasha to die. Gatenmaru consumes a woman from the village, and taunts Inuyasha as he reaches for another village woman to devour.

An old man of the village grabs the Tessaiga and tries to run it to Inuyasha. As the bandits are about to slay the old man, Sango and Kagome arrive and save him. Kagome takes possession of Tessaiga while the bandits surround them. Within the poison cocoon, Miroku's barrier is failing.

The demon leader of the bandits orders his men to retrieve Kagome, and Sango, Kirara and Shippō try to defend her.

Inside the cocoon, Inuyasha's demon blood takes control of him. He rips through the poison cocoon, freeing himself and Miroku. Under the demonic influence of his blood, Inuyasha cuts down a bunch of bandits.

Gatenmaru attacks Inuyasha again, this time Inuyasha defeats the monster easily. The human bandits turn and run.

Inuyasha chases down and slays the fleeing bandits. Kagome, still gripping Tessaiga, runs after Inuyasha, calling him. Kagome tries to return Tessaiga to Inuyasha, but he is distracted by the arrival of Sesshōmaru.

When Sesshōmaru draws his sword, Inuyasha knocks it aside. After a few moments of fighting, Sesshōmaru sees the truth of Bokusenō's words. With his typical contempt, Sesshōmaru easily tosses Inuyasha to the ground, unconscious. Kagome throws herself between the half-brothers. As Kagome begs Sesshōmaru to stop, Sesshōmaru instructs Kagome to use Tessaiga to return Inuyasha to his senses.

Sesshōmaru returns to Jaken and Rin.

In the village, Inuyasha looks at the destruction he wreaked, and confesses that he doesn't remember causing it. He worries that it is the first time he does not remember what happened during his transformation.

Later villagers blamed him about his demon form but the boy defended Inuyasha because he tried to save his grandfather.

Trivia

 * This is the second time Inuyasha transforms into a full demon.
 * The irony of this episode is despite Inuyasha's desire to become a full demon, he regrets it, since it didn't happen the way he wanted it to.