Demon Prince Enma

 is a Japanese horror anime and manga series created by Go Nagai. It is a sequel/remake of "Dororon Enma-kun". The manga version of "Demon Prince Enma" would get a sequel called "Satanikus Enma Kerberos" by Eiji Karasuyama in 2007.
Plot.
Four grown demons (Enma, Yukihime, Kapaeru, and Grandpa Chapeauji) are part of a Yokai-Patrol searching for demons that have escaped from Hell into the human world. They form the group known as the Enma Detective Agency as a cover for their activities.
Media.
Manga.
Satanikus Enma Kerberos.
 or "Satanikus ENMA Κέρβερος" is a direct sequel to the "Demon Prince Enma", with no relation to the OVA. Its serialization started on June 26, 2007 in the number of August 2007 of Kodansha's "Magazine Z". While "Demon Prince Emma" is an adult horror-action manga, "Satanikus ENMA Kerberos" takes a less serious tone and becomes slightly more lighthearted. The focus of the series is the quest to revive Enma.
Reception.
Helen McCarthy in "500 Essential Anime Movies" says the violence is "extreme", but "it's stylishly designed and animated". She praises the soundtrack and humor, which is "well integrated in the characters".