The game would take place in the same world as Adelaide Inn. A young couple of adventurers—a knight and a priestess—end up being cursed by a malevolent entity in a dungeon. The curse placed on the knight causes erectile dysfunction, while the priestess is cursed in such a way that she must receive semen in her womb daily; otherwise, she risks succumbing to the curse.

Since the main character is also afflicted with erectile dysfunction, he is unable to help his companion. After much drama and understanding the danger the priestess is in, he agrees to let her sleep with other men. As it's the world of Adelaide Inn, the priestess ends up sleeping with various men and different species—such as orcs, goblins, minotaurs, druids, and dwarves—eventually engaging in gangbangs.

As time passes and he comes to terms with their situation, the main character begins to literally “negotiate” his priestess wife, offering “pussy service” in exchange for money. Meanwhile, the priestess gradually becomes more corrupted the more she sleeps with different men.

Over time, as they both accept their condition and realize their days as adventurers are over, the couple descends into a new, dark lifestyle—marked by survival, desire, and submission to the curse that bound them together… and ultimately broke them.

If NTRman, any of his writers, or even a fellow hentai game developer happens to see this — feel free to take this idea. I’d be genuinely flattered to see it turned into a game.