Kenichi: The Mightiest Disciple

Season 1, Episode 17

Episode Title: Protect the Name! Attack of the Dojo Challengers!

Air Date: 2007-02-03

Overview:

Rivals from another dojo break into Ryōzanpaku to challenge their masters, but only with Kenichi and Miu present at the moment, they end up having to confront them by themselves.