In a world where humans and demons have been in constant conflict throughout history... One day, the demon king, Gil, visits Hazelbard Kingdom in the human territory. Gil proposes a truce on the condition that both races do not cross between each other's territories. However, in order to make this agreement her son Clemont's achievement, Queen Catalina forces her step daughter, Estelle, to marry the demon king.
A world where demons coexist with humans. While there have been no conflicts in the past between demons and humans, demons possess tremendous abilities, can use a variety of magic, and have the power to control humans as underlings. Demons are at the top of the biological hierarchy, so to speak. So now I, Toma, am the underling to the demon, Chiaki. Every night I have to feed him my bodily fluids to "replenish his magical powers". He licks me all over... Our lewd acts should have no meaning; our relationship is a master-servant one. But why does my heart ache so much...?
Every inch of my body within the sworn enemy's tender grasp... How did this happen?! Gangly hero meets monstrous yet charmingly sweet demon in this guiltily sweet romance. -- I'm Masakiyo Kato (21), also known as Skull Black. I may be somewhat scrawny, but I'm a protector of justice. Today, once again, I'm defending the town against Baphomet, a commander from an evil organization. At least that was the plan! He somehow ends up pinning me against the wall... again. As if that weren't enough, he shows up at my place asking, "What do you want first? A bath? Dinner? Or do you want me?" What the hell does this giant beast want? And why is he trying to get me to marry him?!