These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Awesome Music / Ear Worm: The openings to both seasons are incredibly catchy and cool-sounding, especially that of season two.
Creator's Pet: Matsuoka is revealed to be this. In fact, she has started appearing more in the manga due to it.