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.
YMMV: Showa And Vampire
Angst? What Angst?: Even after being kidnapped at young ages, being tortured and turned into cyborgs, made to kill a lot of people, and even getting killed around a year prior to the start of the story, the renegade NUMBERS have no trouble adjusting to the new environments. Although the only ones who come closer to Wangst are Daichi and Hana.
Shinichi: "Life's too short to be emo."
Iron Woobie: After seeing what Shinichi has suffered and yet bounced back from, albeit by repressing nearly all memory of it ever happening to him, it's plausible that he is this, as he's not The Stoic nor is he a Jerkass or an Omnicidal Maniac driven by his suffering to end the world... even if BLACK 13 has the potential to become the last one.
Moral Event Horizon: Seeing what was done to Shinichi to transform him into BLACK 13 is enough to convince the unlucky viewers that Dr. Gebok — and GIN-SHOCKER — crossed this in a big way.