InuYasha Episode 30: Tetsusaiga is Stolen! Showdown at Naraku`s Castle
Episode 30 of 167 of InuYasha, aired June 11, 2001, 24 minutes. Available with English subtitles and dub where released.
Episode summary
In the hopes of saving Kohaku, Sango steals Inuyasha's Tetsusaiga and hands it over to Naraku. However, a battle against Naraku soon ensues.