InuYasha Episode 155: The Demon Protector of the Sacred Jewel Shard!
Episode 155 of 167 of InuYasha, aired June 7, 2004, 24 minutes. Available with English subtitles and dub where released.
Episode summary
Inuyasha and the gang follow Naraku. Before the group can confront their nemesis, Inuyasha must battle Hosenki, an old friend of Inuyasha's father.