Hard-Boiled Cop and Dolphin(Shakunetsu no Nirai Kanai)

"Hard-Boiled Cop and Dolphin" (Shakunetsu no Nirai Kanai) is a manga that combines elements of detective noir and fantasy. The story takes place on a tropical island where a tough detective, Ikkyu, teams up with a talking dolphin named Iruka to solve mysteries and fight crime. Together, they tackle complex plots involving conspiracies and supernatural events while exploring the depths of the ocean and protecting the island and its inhabitants.