Onna Maou Melissa no H na Boukenki: Seieki o Atsumeru Ero Maou

Based on the erotic doujin game by Acerola (あせろら).

The demon lord Melissa has been reduced to begging the commoners of the village for their seed...

How did they get into this predicament? One of her companions botched a spell and the only way to break the curse is by ingesting large amounts of semen, and until they do they are at the mercy of any monster that crosses their path!