Majin Tantei Nougami Neuro, Yondemasu yo, Azazel-san. (TV) Recommendations
-A badass, sadistic male lead
-A female lead that's not the damsel in distress or fan-service type
-Amazingly hilarious comedy
-Can seem childish but have actually very mature content (it doesn't show in MTNN in the first few episodes, but believe me it's NOT a child friendly anime)
Both are graphic ( Shows some degree of blood ) ,
They are kind of slap-stick humor.
And demons demons demons. . . !!!