Demons often struggle to grasp what is and isn't appropriate around humans, as things are so different in Hell. For example, stabbing someone (at least with a regular blade) is often seen as either a warning or a joke amongst Demons, as it does them no real harm, however this obviously doesn't apply to humans.
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Black butler Headcanons
FanfictionJust some book filled with whatever Black Butler based nonsense my brain decides to cough up.
