Omake (Volume 20)

This is the omake included in the Volume 20.

Summary
Ranpo tells Poe that he will be needing a room to house Kunikida, Yosano, and Katai. Poe becomes anxious and stressed because of the request stating that he can't craft a room unless a mystery is involved. Meanwhile, Mushitarō who is currently being sheltered by Poe's ability suggests to Poe to add a paper with "1+1" on it and have the Agency members solved it in order to exit the room. Poe just dismisses Mushitarō's suggestion as it is a math problem not mystery.

Mushitarō once again suggests another idea - to shove a corpse in the room. Poe refutes the idea telling that he cannot just make the Agency members live with a corpse and mysteries don't have to involved death. Poe still plans to make the problem hard enought so Ranpo can only solve it when he returns to the room.

Mushitaro suggests a third idea in which a scary voice says "open" at the door at regular intervals, allowing the agency members to open it ans use as their escape. Poe just decribes his idea as a horror novel. Mushitarō shortly thinks of another problem about having a space alien. Their debate got dragged until night.

After many trials, Poe is able to craft a room where Ranpo easily figured the mystery in a problem. Meanwhile, Atsushi wonders about the answer of a book and Kunikida responds that the room has no secrets and realizing it will help one to get the mystery solved.

As a job well done, Ranpo gives a lollipop to Poe.

Characters in Order of Appearance

 * Ranpo Edogawa
 * Edgar Allan Poe & Karl
 * Mushitarō Oguri
 * Akiko Yosano
 * Doppo Kunikida
 * Katai Tayama
 * Atsushi Nakajima