| Watermelon Spirit|
It has a watermelon for a head, and wears a blindfold and a cape, and wields a stick.
It attacked committee members of the Sankai Shopping district during preparations for the Watermelon splitting competition, which caused the competition to be suspended. Rinne investigated, and it is revealed that this spirit was animated by 4 kids’ strong desire to assist to the Watermelon Splitting Competition as they had suffered misfortunes and responsibilities, and it attacked the committee members randomly since it was blindfolded. By providing a watermelon for each kids’ spirit to get them satisfied, the watermelon spirit case was solved and the competition took place. Rinne got a lot of watermelons as a prize.