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.
Angst? What Angst? - Tetsu and Yuki are almost comically well-adjusted. The most egregious example of taking something in stride is Tetsu losing an arm, which he is at most mildly irritated about.