Kenichi, Hattori, Shinzou, Shishimaru, Yumeko, Kemumaki and Kagechiyo go to the ski lodge. Kemumaki tricks Kenichi into going to the hot water spring nearby, disguising as a girl. Hattori catches them, but it's too late - Kenichi literally and metaphorically gets into hot water with Yumeko.
Other information Edit
This is the final ever episode of the series.