Jyuken Sentai Gekiranger Lesson 21: Biki-Biki-Biki-Biki! Extreme Ki Extremely Season 1 Episode 21 Airdate: July 22, 2007 Synopsis Rio forces the Gekiranger into showdown earlier than expected, forcing them to figure how to activate Kageki within themselves before he can crush them! ← Lesson 20: Gicho-Gicho! Triangle Opposition Match All episodes Lesson 22: Kyui-Kyui! Date with a Celebrity →