InuYasha

Season 1, Episode 18

Episode Title: Naraku and Sesshomaru Join Forces

Air Date: 2001-03-05

Overview:

Naraku appears before Sesshomaru and lends him an arm with a sacred jewel shard embedded in it. Sesshomaru attaches the arm to himself and appears before Inuyasha and the gang to steal the Tetsusaiga.