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.
The Scrappy: The Tomonagas' neighbors and Regina are seen as this by some fans.
Viewer Gender Confusion: Many non-Japanese-speaking viewers think in the beginning, when they watch the show without subtitles, that Yuuta is a girl. This is probably intentional, as Yuuta was a girl in previous drafts of the show, and he looks a lot like one when in a dress and with pigtails.