Kenichi: The Mightiest Disciple Season 1 Episode 49 The Mightiest Transformation! The Ryozanpaku Rhythm! ( Air Date 2007-09-22 ) Genre Action & Adventure, Animation, Comedy category. Overview "Unable to evade Ryuto's punches at all, Kenichi starts to counter attack by constantly changing his fighting style, imitating his masters' personalities (to their combined horror and amusement).".