Reincarnated in a depressing erotic world but living a normal life (right?)
The Loyalty of the Genius Swordswoman

Standing on the fierce battlefield, indifferently observing everything that was happening, was a young woman manipulating magic to counteract enemy tactics while wielding a sword.

"I never imagined I would betray the empire this way..."

The deafening roar of the battlefield seemed to momentarily drown out, replaced by her murmured words with a touch of annoyance, as her gaze drifted to the past, to the time when she still held her pride and prestige.

This led her to wonder: how had she ended up here?

Originally, Rhiannon was a genius, considered a master for her command of magic and the sword, inherited from her father and mother, who in turn were a master swordsman and a wise woman, which allowed her to be born gifted with absurd talent in swordsmanship and 20 times more magical power than the average mage.

This had made her ascend as a relevant figure within the empire at 16 years of age and become admired as a symbol of talent and dedication, where everything seemed to be going well for her as she progressed.

However, what she didn't know at that moment was that her brilliant future would be irreversibly fractured when one day she accepted a mission that was utterly simple and mundane, which would lead her to the deepest pits of despair.

The mission was extremely simple: merely to exterminate a group of wild goblins that had appeared in a nearby village and seemed to be kidnapping young women.

"Ugh... I'm tired of these little fish that don't even count as a warm-up."

For Rhiannon, exterminating them was extremely easy; a slight blow was enough to annihilate her target in an instant, which led her to become overconfident and take her time dealing with the goblins, which would become her biggest mistake...

"There's no way to win against something like this, gobbu!"

"Run, gobbu!"

Seeing the goblins fleeing in terror, Rhiannon could only sigh with a lazy smile as she slowly pursued them.

"Well... if they had surrendered quietly, I would have killed them painlessly..."

As Rhiannon advanced, more goblins fell before her sword, until they reached a cave where, thanks to her magic, she lit a light to continue exterminating them one by one from their hiding places.

(The kidnapped women are probably here.)

As if responding to her hypothesis, further in the cave, there were many young women chained up who seemed to have been raped by the goblins to continue reproducing.

Upon seeing their terrible state, Rhiannon was filled with indignation and fury towards the goblins.

"Scum, you will all die!"

This not only resumed the unilateral slaughter but also accelerated it until only one goblin remained alive, crouched on the floor, begging for its life, having lost the will to fight.

However, such an act did not move Rhiannon's heart in the slightest, and she proceeded to raise her sword to finish her mission.

"Vanish from this world!"

...But it was at that moment.

(COLLAPSE, COLLAPSE!!)

"?!"

That the rock wall behind the goblin began to collapse, revealing a statue of the demon god that released a great malignant presence.

"It's not possible...!"

She was aware of the damage something like that was capable of creating if not quickly controlled after activation, as its power would spiral out of control, destroying everything in its path.

(I must destroy it now!)

Rhiannon immediately shifted her target from the goblin to the statue, ready to destroy it, gathering her magical power in her sword before it was too late.

(ZAN!!)

.... And with utmost care and precision, she was able to cut the statue without causing any damage to the hostages or the surroundings.

"Urgh...!"

However, the power filtered from the statue had already spread, running wild everywhere.

(I have to protect the hostages!) Rhiannon decided to use her magical power to protect the women at that moment, preventing them from being affected by the thick miasma spread everywhere.

"Oh...argh..."

However, that action exposed her directly to the miasma without any protection, which mixed with the perverted desires of the last goblin still alive in the place, who tried to take advantage of the confusion to escape.

"Where do you think you're going!"

"Gobbu...!"

But to her misfortune, Rhiannon still had him under surveillance, throwing her sword into his heart, killing him in the process and completing his mission.

"At that moment, I really thought everything was over... But I guess it was just the beginning of my misfortunes."

Rhiannon remembered how slowly her body began to disobey her and refused to wear clothes, forcing her to wear less and less until she was unable to put on any clothing at all.

The worst part was that, against her will, her body kept going outside completely naked, while engaging in increasingly profane behaviors such as urinating on the empress's statue, raping young people who passed by, or saying degrading things about herself, while comically dancing naked, all while she was fully conscious.

Slowly, she ended up losing control over her own mobility until she was easily imprisoned. Even when she revealed her lack of control over her actions, no one believed her.

Perhaps because she was masturbating, shaking her breasts naked in front of others when she said it?

The only saving grace for her was the fact that she was not decapitated due to her past actions.

In that way, she continued living in the dungeon, being used by the guards as a kind of toy until she became pregnant and gave birth.

This is what broke the last shred of sanity she had left, leading her to kill her newborn child again and again every time this happened.

"But now I am free from that curse."

She continued living in that hell until a "little girl" with silver hair and white eyes arrived as a new prisoner and, through a strange knightly transformation, freed her from her curse with a massage of gray flames in her hands without asking for anything in return, which led her to swear eternal loyalty.

"So, for the sake of my savior... I will destroy anyone who comes near!!"