The scene of Akane telling Tsukutsun about Goku and Taro wiped out walking into the coffee pot is filler.
After playing "tag" with General Blue, Arale runs back to the group. When she gets back and says "I'm here", Sembei Midori Norimaki's lips move but no sound comes out.
Near the end of the episode, Goku tells Arale she should join the World Martial Arts Tournament next year. However, he has competed in the 21st tournament recently, so it would be 2 or more years until the 22nd tournament occurs.