Educational collaboration specials between Oshiri Tantei and the documentary show Cosmic Front.
 
Mikku will help the Butt Detective solve a case, while also teaching the newest facts about dinosaur research and space rockets.
 
(Source: Anime News Network)

He's chivalrous, cunning, and his looks are anything "butt"... 
Meet “Butt Detective”, a gentleman whose catch phrase is, "Hmm...I smell a case." 
Every day, he poots the big city's cases to rest. 

(Source: Toei Animation)

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