During the final episode, when Gotou tells the main characters that he plans to remain the advisor of their club regardless of who won the competition, Inaba punishes him by holding him in an arm lock - a wrestling move. Then you remember which one of the main characters is a self professed hardcore wrestling fan...
There are incorporeal, inscrutable, seemingly omnipotent "beings" out there with no discernible sense of morality who think nothing of showing up one day to mess up (arguably to the point of killing) the lives of completely random people because it's "interesting".
