Hard-Boiled Cop and Dolphin

 is a Japanese manga series written and illustrated by Ryuhei Tamura, the author of Beelzebub. It has been serialized in Shueisha's "Weekly Shōnen Jump" since June 2020. The series is published digitally in English language by Viz Media.
Plot summary.
Trouble-making police detective Boyle Samejima, who is not averse to breaking rules to get the job done, is transferred from Shinjuku, Tokyo to the laid-back Ogasawara Islands. Now at the Anegashima Police Department, Samejima investigates the bizarre unsolved case of , where a religious cult who worshiped a little girl as their oracle suddenly vanished. That little girl, Chako, has recently returned with a humanoid dolphin named Orpheus, whom she calls "Papa." Orpheus joins the police department on the same day as Samejima, as his partner and superior.
Publication.
"Hard-Boiled Cop and Dolphin" is written and illustrated by Ryuhei Tamura. The series began in Shueisha's "Weekly Shōnen Jump" on June 27, 2020. Shueisha has collected its chapters into individual "tankōbon" volumes. The first volume was released on November 4, 2020.
The series is published digitally in English language by Viz Media.