It was just another day in the ever growing town of Kazoku. The kids were in school while the adults were out doing their respective jobs. Aku walked through the town with a couple of his samurai as his bodyguards. Not that he really needed them. It was more of a formality deal than anything. As he went through the town, he visited shops just to pop in and check on how things were going. And of course, his favorite places to stop by were the bakeries and restaurants which the owners happily offered him samples of and he gladly ate them all.

By the time he made his rounds, it was time for the kids to get out of school and make their way home. As Aku was speaking with one of his samurai, he hears the sound of a speeding cart coming from down one of the main roads of the city. He pushes his guard aside as he rushes toward the sound as fast as he could. Just as he rounded the corner, the cart was heading straight for a group of children. They cried out in terror as most of them were quick to move out of the way of the speeding cart. One of them had fallen trying to get out of the way and by this time, they were too frightened to move from where they had fallen.

Just as the cart was mere feet from running the child over, Aku slides in and pushes the children up and pushes them out of the way. All ended well and no one got hurt right? Well, unfortunately, Aku got caught in the oncoming cart, specifically his left arm. The wheel connected with his upper arm and immediately got mangled and destroyed. He lets out a cry of pain as he is thrown to the aside side of the road, his arm completely destroyed beyond repair. He rolls around on the ground as he grabs at his arm in pain while everyone gathers around him in shock concern for their friend and general.

“Sensei!” shoulder both samurai and students as they tried to do what they could for him. “Get the doctors, we need medical attention for Aku right away!” shouted one of the guard. A pegasus was already in the air and on the way to the hospital, soaring as fast at their wings would take them. But this point, Aku laid in one of the hospital beds unconscious as he no longer had his left arm. Magic in this world had no affect on him whatsoever anymore. That included healing magic. As he laid there resting, Iron Heart and a few of the higher ranking samurai stood there as they spoke with the doctor who had operated on Aku.

“I..am sorry, sir. We did what we could for him. But, I am afraid amputation was all we could do at this point. With healing magic it would have been a painful process but a powerful one. But, given his...unique defense to any kind of magic, not even physical mending would have helped him...the arm was completely destroyed in the accident.”. Iron let out a frustrated huff. He was angry. But not at Aku or the child. He was simply angry at the fact that his right hand man was down and out of commission. But at the same time was also very proud of Aku for what he did to save the child.

“How did this happen?” asked Iron as he looked to one of the samurai. “According to witnesses, the stand that was holding the cart in position broke at the legs which sent the cart down hill. And that is when it turned a corner and started heading for a group of children. Aku pushed the child that was caught in the path out of the way but...as you can see at the coast of his left arm.” the samurai reported with as much detail as he could. “We will discuss more in the morning. Right now, my patient needs their rest. Please, all of you leave the room.” the doctor ordered.

As Aku slept through the night, the painkillers that were doing their job perfectly started to wear off. Aku began to toss and turn with his sleep as the phantom limb pain started to surge through his body. Aku opened up his eyes, immediately taking in his surroundings expecting to be awake in a hospital bend. That was not the case. Aku sat up to see that his surroundings were that of a dark japanese forest. One that reminded him of Aokigahara. Or the forest of suicide. But he was in a small clearing with metal torches lighting up with flames in a circle around him along with a torii gate appearing slowly on the other side of where he now stood. Immediately an arm swung from beyond the gate and slammed hard upon the water of which Aku stood. The sudden appearance and slam made Aku fall back before he scrambled back onto his feet. What appeared before him now was a rather tall and large ogre. The skin of which was a dark ash grey, his hair was long and pure white just like Aku’s he even had the same kind of eyes that Aku had when they’d change. It walked closer and closer to Aku, looking down at him as it growled ferociously in his direction. Aku also took note of it’s physique. Musclebound limbs and a large stomach, but with abs still visible even from the gut it had. And atop his head stood two horns that curved up but not all the way around.

The oni looked down at Aku without a word. Its gaze and smile was all it took for Aku to start backing away slowly before he turned to run. Though, there was nowhere to run. The ogre roared loudly before grabbing hold of Aku with his right hand and slammed him against one of the large oak trees. Aku lets out a groan of pain as he tries to push away with his one arm, but the ogre was too strong. “Wh-What the hell do you want from me?!” Aku shouted as the roots from the bottom of the tree bound him in place. Still the ogre said nothing. But draw the large sword it had resting on it back. Aku closed his eyes expecting that blade to be coming at him. But, that wasn’t that case. Akuy heard the painful scream of the ogre as he had loped his own left arm off. It then let out what Aku could make out as a sinister laugh through his gritted teeth and suddenly thrusts the arm right where Aku’s left arm used to be. Aku’s eyes shot open widely as his pupils darted all over the place. He lets out a loud and horrible sounding cry of pain as the arm started to meld into his body.

He kicks his legs violently and thrashed about in the bindings as the arm had shrunken down to his size, but was slightly larger and buffer than his right arm, the veins illuminating an icy white color as they latched on to their new owner. Every single nerve that connects was like a knife to the arm. Aku could feel the skin creeping along his upper torso and on the left side of his head. The dark grey skin just stopping a little under half way across his body and just over the upper left squatter of his face. Like someone had wiped paint over his body along with the same kind of horns now on his forehead just like the ogre’s. And the final pieces, his left eye now permanently changed to that black sclera with a new deep purple iris and his teeth now razor sharp.

Aku was suddenly then let go by the roots with a thud and splash as he landed back into the shallow water. He lifts the new arm up as the veins continue to slowly flash upward their icy white luminescence. He looked over the silver claws before opening the hand up to see a large gaping hole open up which was riddled with many rows of razor sharp teeth. Once he lowered his arm, he watched the oni disappear beyond the gate once more without a single word.The flames went out one by one until it was complete darkness. Aku then shot up from his slumber with a terrified scream, breathing heavily and soaked in sweat to the point where it looked like he had stepped out of the shower. This time, he woke up where he expected to in the first place. Aku quickly got out of bed and ran to the bathroom before turning on the skin faucet to hot water. He cups his hands together and splashes it onto his face trying to make sure he was awake. Wait..his hands? Aku knew for a fact that he had lost his arm in the accident just a few hours ago.

Aku slowly brought his new arm up into his vision. The same arm that the oni had placed upon him. After noticing that, he took notice of the horns and dark grey skin that patched his left side. The heavy breathing slowly picked up again before Aku let out a terrifying “aaaaaaAAAAH!!!’ before slamming the fist of his new left arm into the mirror, shattering it into a hundred pieces and running back out. He runs into a wall and slams both of his fists on it as he tries to process just what has happened to him. The man was no longer a human. But now what folks call a ‘keshin’, a half human half oni. “No...nononono!” he said over and over as she pounded his fists on the wall. “Why is this happening NOW of all times?! I can’t let Iron or anyone else see me like this!”.

Just as he was searching for an answer for why this happened to him, it hit him just as quickly. “The evil that I have been consuming...it finally had its chance to start manifesting physically when I lost my arm. And so it is using the vacant spot on my body to become a physical piece of myself…”. Having come to this fact, Aku finally calmed down now knowing that this was his own fault for eating both magic and evil at the same time. His gaze went back down to the palm of his hand where the hole that was once there had seamlessly faded for now.

--The Next Morning--

Aku laid there under the blankets and sheets, dreading the turn of the doorknob. When he finally heard it, he flinched under his comfy cocoon and only pulled it around himself tighter. It was the nurse that was assigned to him that would be the first unlucky creature to see just what was under those sheets. “Sir? I have come to change your bandages, I need you to come out from the covers though.” She said in a warm and polite tone of voice. Sky however wasn;t planning on giving up the covers without a fight. She watched as the blankets tightened around him as she gripped them tightly “I don’t need them. Please...just go away.” he said in an exhausted tone of voice, having not been able to sleep since last night after his change.

After a tug of war that lasted for about a few minutes, she finally got the blankets off of his body. He immediately curled up into a fetal position when his new arm tucked under his form and his other arm covering his head “Don’t look at me, please!!!” he shouted and pleaded. “Sir, you need to calm down our you are going to reopen your-!” she cut herself off once she had come around to calm him down. What she saw brought absolute fear to her face and her heart. What was before her was scarier than any monster she had come into contact with. Aku saw the look on her face and immediately rolled onto the other side and threw the pillow atop his head to hide his face. “Please..just go. As you can see, I don’t need any bandages…” he said as he pulled the blankets back over himself.

A few hours later, the door opens once more and in comes both Iron Heart and Tempest Shadow whom he had grabbed on the way over from her new home within the town that she had been living in for over a week now. There they saw Aku, fully dressed in one of his outfits he had requested to have been brought from his house. As they got closer and closer to Aku, they noticed right away that not only his appearance has changed, but his mass and height as well. He came up to Iron’s chin before, but now he stood a good foot over Iron at this point. Aku was now literally the ‘Oni General’.

“Ah, so the nurse has told you what she has seen, I assume?” he asked as he turned to face the both of them. Iron’s expression was one of shock while Tempest seemed to only barely be phased by Aku’s new appearance. “Kiddo? WHat in the hay happened to you…? Your arm..it was gone but…” he said as he was at a loss for proper words.”Yeah..” Aku said as he lifted up his left arm and looked at it “It's my fault to begin with. I ate too much evil when I consumed magic as well. And with my arm chopped off, it took the form of an omi in my dreams and now...well you see what it has done to me. I have become half of the oni.”. Iron walks up to Aku and looks him over “Are you still...well you know...you?” Aku nodded in reassurance”The change is only physical...for now. Who knows if I lose another limb that the same won’t happen to my mind and heart. But, I am just happy that the young one who I saved didn't end up in here or worse. I could have lived with one good arm.” he said as he tried to make light of his situation now that the freaking out part has come and gone.

Aku’s gaze turns to Tempest who didn’t seem the least bit bothered by Aku’s transformation. “Does this new change not bother you in the slightest, Tempest? You have not said a single word when you came in.” Aku asked curiously as he now stood before her. Tempest shook her head and offered him a smile of reassurance “If anything, this look suits you far more than how you used to look. You look as fierce as you fight now. And I think you look more...wickedly dashing like this.” she said before quickly realizing what she had just said at the end of her sentence, a blush creeping across her muzzle “Er...forget I said that…” she said as she quickly turned away from them both. She left the room quickly forget what she was going to tell Aku to try and help him feel better in her own little way. But, it seemed that what she had said before did in fact make him feel a bit easier about this change

“Geez...I am going to have to get new clothing that fits me and everything. These clothes are barely holding together as is…” He said as he could hear the fivers slowly tearing with every move he made. Iroh Heart laughed lightly and patted Aku’s upper left arm”How you look won’t change how the folks her see you as who you are, Aku. You should know better than that. Now come on, let’s get you home. As the mayor of this fine town, I am giving you the next week off, fully paid. You need your rest after what has happened. I will have Tempest check up on you each day while you are recoperting. Come on, off we go.” He said as he ushered Aku out of the room and out of the hospital.

Author's Note

Just a heads up, this is only a physical transformation. He still cannot use any sort of magic. Also his strength has increased do to his new body mass and muscle. He can only still eat and nullify magic when it touches him

May the darkness grant you peace.