Episode 122

The Power of Banryu: Duel to the Death on Mt. Hakurei  is 122nd episode of Inuyasha anime

Plot
The battle between Inuyasha and Bankotsu heats up when Bankostu reveals he used the lives of 2000 humans and demons to make Banryu much stronger. After they punched each other for a bit, Inuyasha finally uses Backlash Wave on Banryu's demonic ora to defeat Bankotsu.