Episode 20

'''Despicable Villain! The Mystery of Onigumo!' is the twentieth episode of the InuYasha'' anime. It first aired in Japan on March 19, 2001.

Synopsis

 * 1) Kagome is stuck in the modern era, unable to return to the Feudal Era without a shard of the Shikon no Tama.
 * 2) Kaede tells Inuyasha and Miroku about a man named Onigumo, a bandit whom Kikyō had cared for 50 years ago; they visit the cave where Onigumo laid, and feel the overwhelming presence of a demon.
 * 3) It is revealed that Naraku was born when Onigumo offered himself up to a hoard of demons.
 * 4) Naraku unleashes Rōyakan, whom he is controlling with the use of a Shikon no Tama shard, on Inuyasha.

Summary
Kaede reveals to Inuyasha and Miroku that in a nearby cave, she and Kikyō once cared for a badly burnt thief, who ended up lusting for Kikyō and allowed his body to be consumed by yōkai from his desire for her and ended up creating Naraku. Naraku soon unleashes a corrupted Rōyakan upon them since Inuyasha is too injured to fight back and Miroku cannot use his wind tunnel with Naraku's Saimyōshō in the air.

Das Geheimnis von Onigumo