Ranpo, Poe, and you all basically worked together. Ranpi was the Armed detective agency's bast detective, you worked for the ADA as a detective and Poe was in the Guild..

Ranpo and you were in the Agency and you were "arguing" over his childish behavior but just joking around..Poe was just sitting quietly reading slightly glancing up at you both every now and then..He sighed and chuckled a little going back to reading since he had nothing to do currently..