Poe (BSD) headcanons because I'm bored and want to blink obnoxiously at @parkerthejester (Yes some are based after the actual author Edgar Allan Poe)
-He never had close relationships with any children his age and didn't have a home life that gave him adequate attention so he would disappear into his own stories. That lack of meaningful interactions as a kid led to his severe anxiety
-He struggled heavily with alcoholism and depression when he was younger like his namesake. He felt alone, lost, and didn't know what to do with his life. After being beaten by Ranpo he focused on writing the mystery novel to best him. It gave him something to latch onto and finally, a reason to life even if it seemed rather mundane to others
-Karl works as a service animal helping for when he gets overwhelmed by crowds and public or his depression gets too bad. He often grabs his psychiatric medication if he forgot to take them or does not have the energy to get up
-He handwrites all of his first and second drafts of a story and only types them up once it has been completely finished and needs to be shared with another but he always keeps a complete handwritten version to give to Ranpo
-Louisa and him still get coffee together every once and a while where they both sit there in silence and work on their own things, a social interaction with no pressure of conversations and they both love it
For anyone seeing this, please feel free to add on because I'd love to see more