"Are you seriously kidding me!?"

Those were the initial words uttered by Aku as he grasped the reality of his situation upon entering the portal. He found himself amidst a conflict, embroiled in a war between two factions vying for control over a mystical phenomenon. Regrettably, that phenomenon turned out to be the very portal through which Aku and Fielma had emerged

"I just noticed that combining serious and kidding doesn't make any sense. LOL" Fielma chuckled.

"How can you remain calm in this situation? LOOK AROUND YOU!" Aku gestured towards one faction of soldiers, who were inexplicably launching projectiles from their faces. His exclamation wasn't provoked by merely finding himself in the midst of a dispute, but rather by the identity of those engaged in the conflict. "We're transported in a world where people have a butt as their face!"

The projectiles they were shooting out of their faces were, inexplicably, their own feces. The incredible distance these fecal projectiles could reach was astonishing, yet the logic behind it remained dubious. Did the anatomical arrangement on their faces possess some sort of magical propelling force? This puzzling phenomenon remained a mystery to Aku, though he had no time to dwell on it as the fecal onslaught approached rapidly.

It wasn't raining arrows, but rather feces

"I just realized that this story really have some serious problem."

"What the hell are you talking about!? Quick, find some cover!" Aku hastily led them behind a nearby boulder to shield themselves from the barrage of excrement. The feces varied in size, shape, color, and texture—some solid and others liquefied upon impact. Despite these differences, they all shared one characteristic: an overwhelming stench that was utterly repugnant. Aku and Fielma had no choice but to pinch their noses to mitigate the foul odor.

In truth, Aku and Fielma were not the intended targets; rather, it was the enemy soldiers on the opposite side of the battlefield who were preparing to unleash the vile stench of eldritch horrors from the bizarre orifices on their faces. However, before they could release their noxious payload into the air, a flying lizard descended from the sky.

"Is that a dragon!?" Fielma exclaimed, seeing for the first time a real dragon.

"And that dragon has a butt for a face too!"

"I didn't expect I will be this disappointed seeing a mythical creature for the first time"

It appeared that there was no exception; every species, whether animal, beast, monster, or human, possessed a posterior (butt) in place of a face. As the dragon's hindquarters glided toward the enemy lines, it exhaled a noxious, dark substance emitting a petrifying stench

"THAT DRAGON HAVE SHIT BREATH! AND PEOPLE ARE DYING FROM ITS STENCH!" Aku shouted as he witnessed the horrifying scene.

"No, they actually disintegrated because of its feces! What kind of world is this? Maybe, I should think of a new title for this story... Lord of the Butts? Game of Butts? Shit Wars? That time I got reincarnated as a butt in another world where everyone could die by their toxic feces and stinky ass breath and I have the most powerful stench among them, nobody can beat me in this world so why not just die already?"

It appears that direct contact with feces expelled from a butt-faced creature can be fatal, possibly resulting in death.

The dragon soared through the sky, heading toward the opposing faction, seemingly aligning with the dominant party. With such a formidable creature at their disposal, the dominant party appeared to have the upper hand

"Just stay there, I'm going to take a peek" Aku braced himself as he attempted to steal a glance at the dominant faction. To Fielma's dismay, her poor goblin companion was violently thrown when a massive glob of excrement struck him. "AGGGH!! I'm going to die, I'm dying!!" the goblin screamed as he struggled to wipe the feces from his face.

He anticipated that the feces would kill and disintegrate him, just as it had done to others. However,

"It doesn't seems like that to me. Maybe, in this world where everyone could die by their own waste matter, we're invincible" Fielma suggested.

"I see... I've got a terrible idea"

"I'm glad you know that it's terrible. H-Hey!"

Fielma halted abruptly, closing both her nose and her eyes as Aku unexpectedly removed his pants and assumed a sitting position. The goblin began defecating onto the ground.

"An eye to an eye, a shit for a shit... If that's their game, I'm going to retaliate." The goblin smirked with a wide, sinister grin. The amount of excrement was astonishing, to the point where Fielma began to worry about Aku's well-being. Without hesitation, Aku picked up his feces and divided it into two portions, yet despite this, a sizable mass remained on the ground "Pick you weapon, Fielma!" he suggested.

"No way I'm going to touch that thing!"

"Don't be so dramatic. I've touched your shit!" Aku argued briefly before charging towards the enemy, hurling his feces at them. To his surprise, the excrement exploded upon impact, sending the butt-faced soldiers flying through the air to their demise. He hadn't anticipated that his feces would function like grenades in this world.

Stolen from Royal Road, this story should be reported if encountered on Amazon.

Although the butt-faced soldiers were initially petrified with fear, they quickly regained their composure, demonstrating their disciplined and resilient nature as trained soldiers. They retaliated immediately. Despite the formidable power of Aku's explosive feces, he found himself overwhelmed by the sheer number of enemies armed with semi-automatic firepower. Once more, he was bombarded with a relentless barrage of excrement, now covering his entire body.

Fielma pinched her nose in discomfort as Aku recovered and approached her, "You smell terrible"

"Then cooperate! Am I going to do all the hardwork alone?"

"Excuse me, I'm a woman"

"And I'm going to fucking kill you if you don't do shit"

"It's your responsibility now because you killed some of them! Even if they look like that, they have their own family and you killed fathers who's working hard to feed his kids and fighting for his own country. How could you!?"

"They are trying to kill us!"

"But we can't be killed by their feces, you murderer!"

"Are you guilt-tripping me? Why am I getting morally challenged for retaliating against butt-man who's throwing random shit at us?"

As they continued their banter, the butt-dragon landed behind them, causing them to abruptly halt. Their breaths caught in their throats, and they instinctively suppressed their presence, frozen in place without making a single movement

"Do you feel like the dragon is staring at us?" Fielma asked, unable to discern if its eyes were somehow within the butthole, but it was undeniable that their buttocks were facing towards them..

"Go, RUN!" the goblin shouted, sprinting away as fast as he could, with Fielma following suit. Despite the goblin being the first to start running, Fielma soon surged ahead of him, with the dragon in hot pursuit. The goblin closed his eyes and summoned all his energy, pushing his legs to run even faster. However, the dragon took flight and, as it pursued them, unleashed a substance that seemed conjured from the depths of hell.

"EEEEWWWW! GROSS!" The mage complained, but they didn't die. Instead, they suffered for a prolonged period of time with the scent in the sea of shit. Additionally, the feces from the dragon's breath was so sticky that it made movement difficult.

The soldiers from the dominant party surrounded them.

"They are still alive? How!?"

"I don't know, what kind of monster are they?"

"Just kill them! If our projectiles doesn't work, use the gases!"

The orifice on their buttocks suddenly expanded, and they began to emit farts one by one. However, these were no ordinary farts; typically, gas would be transparent, but in this case, it was not.

"What!? Their fart could act like a smoke screen?" Fielma questioned

"Why are you still getting surprised? Just try your hardest to escape!"

The fart formed a thick, green cloud that appeared poisonous; indeed, anything it touched, including the surrounding grass, immediately withered and died. Even the soil lost its nutrients upon contact with the cloud. Despite this deadly phenomenon, the two couldn't escape due to the overpowering stickiness of the dragon's breath. Remarkably, they remained unaffected by the poison fart, although its stench was unbearable.

The butt-man continued to unleash a relentless barrage of feces at them, but even this proved ineffective until, finally, they were relieved of their bodily burden, and the onslaught ceased.

This was Aku's chance to retaliate.

"[Fireball]!" Aku cast, conjuring a ball of fire as large as a fist that hurtled towards the nearest butt-man. However, to his dismay, the fireball merely bounced off upon impact with the buttocks, failing to penetrate the cheeks.

"What the!?" Aku was shocked to see his fireball fail, but he refused to give up. He concentrated mana into his legs and heated the surrounding feces until they became less dense, making it easier for him to leap.

"Gotcha!" he exclaimed as he leaped toward the targeted butt-man who was supposed to be hit by the fireball. Drawing his sword, he aimed for the butt-man's head and delivered a slashing blow, but to his dismay, it seemed to have no effect as it only bounced on the butt.

The targeted butt-man glanced at his companion and shrugged. Aku couldn't distinguish between them; to his eyes, all the butt-men looked the same. The goblin, stepping back as the butt soldiers prepared to unleash another storm of feces, accidentally touched the gooey substance from the dragon's back. Instinctively, he hurled it toward one of the butt soldiers. Upon impact, the butt-man confused look at it, then he silently fall unconscious, then died.

"I see... only bodily waste could harm them but everything else can't."

"Fielma, it seems like those liquid in their bottles are their cartridge." Aku noticed that they are charging some bottles into the part where their ass is supposed to be.

"Ok, I'll take one from them" Fielma exerted every ounce of strength to push through the sticky mass of feces until she finally broke free from its grip. With a burst of determination, she dashed toward the butt-men at a terrifying speed.

"!?" Suddenly, Fielma found herself standing in front of one of the butt-men, who was holding a bottle of dark liquid. Acting swiftly, she grabbed his hand, snatched the bottle, and darted away. The butt-soldier stood there, bewildered by what had just transpired.

Reading the label of the bottle, Fielma found it strangely familiar, though she couldn't quite recall its purpose. It was labeled "enema."

"What is it?" Aku asked.

"It's their version of healing potion it seems. Try it."

"Why don't you drink it first?"

"Don't be shy, come here" Fielma insisted, locking her arm around Aku's neck.

"NO! I'm warning you! I'll never forgive you if you force it down my throat!" Despite Aku's protest, Fielma pressed the bottle to his mouth and forced its contents down his throat. As soon as she released him, Aku attempted to vomit it out.

"Damn you!" Aku exclaimed, feeling something unsettling in his stomach—something that seemed to move and churn, like a searing heat melting his insides. "Are you trying to kill me? In that case, I better kill you myself now," the goblin declared, pointing his sword at the mage while clutching his aching stomach

"It's not like you will die for poison anyway, you're a zombie" Fielma pinched the blade of Aku's sword and then with a slight tilt, it snapped.

"..." The goblin halted his speech, but internally, his thoughts were in turmoil. 'WHAT THE HELL!? SHE SNAPPED THE SWORD WITH HER FINGERS! HAVE I BEEN UNDERESTIMATING HER ALL THIS TIME? WAS IT A MISTAKE TO RELEASE HER FROM THE WALL?' The goblin couldn't comprehend the source of her strength, but it was becoming clear to him why the Visage had sought her out. He pondered the consequences of antagonizing her further, realizing that he might be the one to suffer defeat if he pushed her too far

"WHAT THE HELL!? WHAT ARE YOU DOING!!? FIELMA!!" Suddenly, the mage hoisted Aku onto her arm, though his backside faced forward. With careful precision, she pulled down his pants, revealing his exposed buttocks...

"I relinquishes that name a long time ago. My name is no longer Fielma." it felt to Aku that Fielma's personality just changed... "I am... your worst nightmare."

"The hell you talking about?"

Fielma pressed against the goblin's aching stomach, and suddenly, a barrage of feces erupted from his backside, each projectile exploding upon impact and causing the butt-soldiers to flee for their lives.

"How's that? HAHAHAH! HOW'S MY FATAL SHIT REVOLVER, AKU-47? HAHHAHA"

Fielma became crazy.