Abyssal Devotion - Diablo x Male OC

"An abyssal sovereign should never be caged, yet Diablo would rather burn the world than let Kaelith slip from his grasp."

Kaelith Nocturne, the enigmatic Emperor of Nocturnia, has ruled his dark kingdom for over two millennia, untouched by mortal desires and unshaken by the whims of demons and deities alike. But when he crosses paths with Diablo, a primordial demon whose obsession knows no limits, an unstoppable force meets an immovable shadow.

Diablo is captivated-no, possessed-by the thought of making Kaelith his. What starts as fascination spirals into a dangerous obsession, one that threatens to consume even the shadows Kaelith commands.

Between political tensions among the Octagram, Rimuru's growing influence, and his own kingdom's sovereignty at stake, Kaelith must navigate a world where Diablo's devotion is as overwhelming as it is inescapable.

But the abyss is deep, and even demons should beware of what lurks within.

Will Kaelith break free, or will he fall deeper into Diablo's relentless grasp?

A battle of power, dominance, and something far darker begins.