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.
Adaptation Displacement: The anime, though hardly known, is better known than the manga and novels related to it. However, it's unknown whether or not this is Anime First.
Angst? What Angst?: Touya and the main characters seem to cope with death easily. When Onimaru died, Touya was so upset he dropped a vocal Precision F-Strike and almost started to cry. But in the next episode, he was perfectly fine, and did not mention Onimaru's name at all for the rest of the show. When Shiori, a very young and terminally-ill girl died, Greyfus actually did break down crying. But in the next episode, he was back to his old self, he seemingly forgot about her, and he did not even mention her name at all for the rest of the show.