Kindaichi Shounen no Jikenbo R: Akechi Keibu no Jikenbo

金田一少年の事件簿Ｒ: 明智警部の事件簿

Miyuki and Kindaichi hear the story about how Inspector Akechi was a really cool mentor to a young policeman named Kobayashi.

(Source: Crunchyroll)