Oshiri Tantei (Butt Detective) Vol.1 - The Case of the Purple Lady's Code

Oshiri Tantei (Butt Detective) Vol.1 - The Case of the Purple Lady's Code (おしりたんてい むらさきふじんの あんごうじけん) is the first illustrated story in the series starring the detective Oshiri Tantei.

Oshiri Tantei is a detective with a peculiar bottom-shaped face who cracks every case thanks to his infallible sense of smell. Together with Brown, his scatterbrained canine assistant, he runs an agency where no mystery goes unsolved. In this first volume, a mysterious client dressed entirely in purple arrives at the agency with a case to solve. A full-colour story packed with riddles, mazes and spot-the-object games that invite young readers to join the investigation.

Original Japanese version, with furigana.