Size Relation

 Here's a size relation of all characters on a festival background.

 This coloured design shows the main/more important characters. I also included the cow on the very right which will appear in the opening scene. My idea for it was that the taiko drummers are hidden under it at the beginning; where you cannot see the down part of the body, so it looks like a real cow (this also explains why the cow will be accompanied by drumming when it passes by). Only later you can see that it has no legs and looks more like a table cloth. According to the music the taiko drummers will jump out from this cotume when the main action starts and they enter the festival.

Here is a coloured design of the side characters.