Karma quickly located an empty house where he would be able to finally evolve his Ketsuryugan. "Tayuya, guard me well." Karma said, taking out a storage scroll he had filled with vials of blood before. It was one of the preparations he had made for his future; blood for his dojutsu evolution. He would go straight to the Immortal Yakunan Ketsuryugan. He lifted one of the blood vials up to his face.
"Obito Uchiha, Jinchuriki of the Juubi. Let's hope your blood give me a great ability. And if it doesn't hopefully your blood is good enough to give me a great evolution to it." Karma spoke to the vial. Every vial of blood was created from the same person due to a unique skill of theirs; Kamui. Even for a god, the ability to negate all damage is incredibly over powered. The space governing gods had similar abilities, and those were the worst. At least, Karma remembered struggling with them a lot.
He grinned, thinking of how great of a boost in power he would soon have. The only downside was the lack of enjoyable fights afterwards. It was a given though, the stronger he got, the less worthy opponents there would be. After he finished pondering his power increase he downed the vial immediately.
After he downed the vial, he felt a pain all throughout his body. He didn't panic though, he knew this would happen. His blood was currently undergoing a mutation. This mutation would alter the color of his blood, and even its properties. Soon, his previous red blood began to flow out through his skin, and his bright red hair also began to fall out, including his tail. His ears, however, began to harden, eventually turning into light blue bones. That meant he now had cat ear-like horns, though they still maintained their functions as ears. He sighed since he liked the color red quite a bit, but it wasn't too bad. In its place, light blue hair quickly sprung up, quickly growing in to replace his previous red hair, even growing beyond its previous short state down to his shoulders. Light blue was just as good as the bright red he used to have, in his opinion.
In his body, his blood had now turned light blue in color. And his eyes now turned into the Ketsuryugan with one more like in the center forming an equal sign, though they retained their previous cat-like slanted shape, as information flooded his mind about his new ability. His skin also quickly became pure white, making him resemble an actual Otsutsuki Clan member, along with his eyebrows becoming small light blue circles and the fang markings he had gotten thinned significantly and became a very pale purple color. With that his transformation was complete, however he could not turn his Ketsuryugan off. And he felt thirsty.
Fortunately, he knew he would feel thirsty, he also knew nothing could satiate his thirsty other than a large amount of blood. He started rapidly drinking down all the blood he had in blood vials. He eventually finished all the vials, but he had stored away a sufficient amount. As he drank the last drop, he felt his eyes begin to itch once again as another line appeared in his pupil, marking the final evolution of his Ketsuryugan. His pupil now had a Y with the lines not connecting at the center, and he was once again flooding with information regarding the new evolution of his ability.
Finally done, he walked out of the room he was in drenched in his previous blood. Tayuya sensed him exiting and was waiting patiently. She didn't panic when she saw him, since she already knew this would happen. She had a bath prepared already.
"Tayuya, I'm confident in destroying these guys now. You should leave. Go gather some of your sisters." Karma smiled.
"But Master-" Tayuya started.
"We were going to go find them after this, but it looks like it's probably better to just get them now." Karma said. "Now, go! Don't worry about me. Nobody can handle me here. Of that, I'm confident."
"Very well. I will go retrieve Fubuki, Kin and Ryuzetsu." Tayuya bowed before leaving.
"Get Pakura, Guren and Amaru too, send them to the Leaf Village; Guren and Pakura can help Yoruichi oversee the clan, and Amaru can train in the academy!" Karma called out, receiving a thumbs up from her. "Good." Karma said afterwards. Then, he removed Akufu from his back, holding it out in front of him. After focusing a bit of chakra onto it, the war fan dissolved into a light blue liquid before reforming again. "Lucky! I won't have to use storage scrolls to keep my weapons!" Karma smiled. Done with Akufu, he let it go and watched as it again dissolved before a light blue portal opened and swallowed it.
"It's really incredible. I can turn any weapon into my own blood, reform it and store it in a separate dimension. That's not all, I can do so much more. Really, dojutsu users are completely unfair in this world." Karma laughed. He quickly summoned Enza and did the same to him after having his transform into a staff. Karma knew it was dangerous for Enza, so he explained the risks, like dying. Enza said it was fine, maybe it would increase his own strength too, and he would be one step closer to becoming Emperor.
Luckily, nothing happened to Enza, at least, nothing bad. Enza was only given free access to the dimension Karma had, although he couldn't do much with it other than train in private. At least Karma didn't have to use the summoning jutsu to summon Enza anymore. Enza could act just like any other weapon Karma stored.
"Well, I'll have to get in tons of fights from now on." Karma smiled. "Sorry Tenten, I'm gonna be taking your dream of being a weapons master now that I have something so convenient for it."
Karma proceeded to take a bath before once again meeting Mei, who was currently wondering what the hell she was supposed to do now. Her forces that were already small in number were now even lower in number. The lowered number was also thanks to someone who said he was supposedly their ally. Even if that guy was strong, she didn't think he could single-handedly win the war. It didn't look like she would be winning the war.
"Hey, Mei! I'm here to ease your worries and save the day!" Karma called as he walked in. "I've reached my current full power, so after tonight we'll be wrecking Yagura and his forces! Let's get a good nights sleep for now. Within a week, you'll be Mizukage!"
"You really think- wait, what's with your eyes?" Mei asked, forgetting about the scolding she was going to give him.
"I used to be able to deactivate it, but it's stuck like this now. Oh well, it just lets the world know that I have the Immortal Yakunan Ketsuryugan." Karma replied laxly.
"Immortal Yakunan Ketsuryugan...?" Mei asked. She didn't remember ever hearing about something like that.
"It's like this..."
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Authors Note: No Clue if I did a great job explaining what Karma's ability is.
As for the fanfic with the evil mc, I pretty much figured out what kind of personality I want the mc to have and stuff, as well as the world. So, first would be Boku no Hero Academia, but I'm trying to think of solid crossover subordinates that wouldn't just shitstomp everything. Like if I made Madara Uchiha a subordinate he'd literally just glare at All Might and All Might would die of fear. The idea for that mc is that he pretends to be a hero in training, while his subordinates slowly subjugate the world. He subjugates the other heroes in training or manipulates them to work under him. That kind of setting. I had like 25 chapters written in One Piece, the mc was son of Dracule Mihawk, as well as holder of the bone-bone fruit (Shikotsumyaku powers) but decided starting with Boku No Hero seemed better to build up.
That one will freely utilize god powers in order to do things as he pleases.
I was also thinking no crossover, but then it would just be subjugate everyone instantly, move on. Or repeating the same exact thing over and over for different heroes. Or be really slow about everything.