Is That the Front or the Back? Kagome Kagome's Mystery

後ろの正面だあれ? かごめかごめの謎

What is the mystery hidden in the lyrics of the well-known folk song "Kagome kagome", At dawn, the vines and the turtles slipped, the front of the back is that one. In order to find out the mystery, Tatsuya Mori set out on a trip "with his wife!