It's a normal day in the ADA headquarters. Most of the Agency are out, so it's very quiet. Michizou is very tired, and is leaning his head against his elder brother, Ranpo, whilst their adoptive father, Fukuzawa, watches them with a fond expression.

Just then, the rest of the agency get back from their mission, and the room gets very noisy. Ranpo puts his hands over his ears and closes his eyes tight, whilst Michizou looks slightly concerned...

Michizou: "Hey... Ranpo-nii, what's wrong?"