Odasaku | Children Always Know

Exactly what the title says. You can request anything and I'll write it! :) (except lemons I'm sorry ):

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This does NOT have to be a _______ x Reader
It can be an AU like the Port Mafia Orchestra vs. The Armed Detective Agency Orchestra, or it could be between someone else and another character.
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The more descriptive, the better!
I do tag people if I do their requests, so if that bothers you, please feel free to private message me.
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I do not own Bungou Stray Dogs or any of the characters mentioned here.