wert's manga / #Gore(2)

The manga centers on homicide detective Hiroki Dan, the son of a former police superintendent general, and who seems to be on the fast track to career success. He maintains a hidden identity as a serial killer responsible for more than a hundred murders of people he deems beyond the reach of the law. - It’s good and all but I think this one is too violent for my tastes

Makoto is referred to as a "deviant" because of his abnormal inclinations and has always suffered alone. One day, he half-heartedly used a "book for summoning a demon" and did a summoning ceremony, successfully summoning the Archduke of the Demon World, J, who has a majestic and beautiful appearance and could speak well. In exchange for his life, Makoto made a deal with J in order to make his hidden desires granted. Then, he was suddenly reborn as a demon?!