Animeverse Slayer!

Elder Kuwajima started to train Inosuke along with Zenitsu. With Zenitsu he told him to train first form over and over again till it becomes a part of him. He wanted to incorporate it into every inch of his body.

As for Inosuke, Kuwajima was stunned when he saw how much potential the boy had. Akira developed his abilities when he was halfway through his life but that's not the case for Inosuke. He is still young and growing, right now is the best possible time for him to train and improve.

Six months passed by in the blink of an eyes.

Leo and the rest completely went off the grid, this effectively removed them from the demons sight. All four of them didn't laze around and practised hard, next time they didn't want to hide.

The sun was high up in the sky, Akira was sparring with Inosuke while releasing his bloodl.u.s.t. To a boy less than thirteen years of age it was too much. Inosuke was trembling non stop, but that stubbornness to rise up kept him standing.

"That's enough for today. Inosuke, go spar with Zenitsu."

Elder Kuwajima who was watching from the side said. Akira took back his bloodl.u.s.t and went to rest. Inosuke kneeled down and gulped for air, after calming down he went to look for Zenitsu.

Six months was enough for both of them to get acquainted. Inosuke found the only person he could beat among those present here and he was elated. Every day he would look for Zenitsu for a fight and beat him, this improved his mood.

I am not weak, these freaks are just too strong.

Leo and the rest were practising on their own. Sabito was matched up against Leo and Giyu with Makomo.

Six months of training had brought the four of them far, their strength increased by a large margin that even they don't know where they stand now.

Just as the fight was getting heated a crow flew from the distance, a small scroll was tied to its feet. As soon as it landed Leo stopped his fight and took the scroll. Though they were inactive for six months information about what was happening was always delivered to them.

He unfurled the scroll and read it, his pupils shrunk when he saw what was written inside. Murderous intent started to leak from his body, Sabito and the rest were shocked. One moment he was all fine and happily sparring and now he was leaking so much murderous intent that it made their legs go jelly.

"Leo, what's wrong?"

Akira also sensed it and quickly came and asked. Leo snapped back and realised what happened.

"Sorry guys."

Sabito shook his head and said.

"It's alright. But what happened, what's did it say for you to just go berserk?"

Leo clenched his fist and shredded the piece of paper into innumerable pieces and said.

"Sis Kanae was attacked by an Upper Moon."

What!?

Sabito and rest were shocked. Leo didn't wait for them to ask and replied.

"Don't worry. Luckily Oyakata-sama was worried that something might happen and gave order to be not alone at all times. Rengoku-san was nearby and both of them managed to force him to run away."

Phew!

Only when they heard she was fine did they relax, however all four of them were fuming inside. Sis Kanae was someone they respected and she was like family.

"Muzan is getting restless."

Leo said after some thought. It made sense, they lost an Upper Moon which hadn't happened in hundreds of years and Lower Moons are now being hunted down like wild animals.

"He must have put the pieces together. There may be another attack."

Makomo said.

"Doesn't matter. The scales are tipping in our favour, all we need is time."

Leo said what was in his mind. He turned to look at Zenitsu and Inosuke who were fighting in the distance and smiled.

"The future belongs to us humans."

...

Infinity Fortress.

Muzan stood on a high platform immersed in his work. Six figures stood beneath him, all of them had baleful aura around them.

"So you couldn't kill a Hashira."

"Yes, Muzan-sama."

A young man with slightly pale complexion and toned muscular build spoke with a smile. However just as soon as his words left his mouth his head was wretched apart by an unknown force.

"Then what use do you have?"

Those words didn't seem like a question but rather a fact when spoken by Muzan. The man who had his head ripped off regenerated another one and said while smiling.

"I can do whatever you want me to do, Muzan-sama. Should I gouge my eyes out or my heart or my limbs?"

Muzan continued to look through his collection of books, after a while he asked again.

"Did none of you find Blue Spider Lily?"

Suddenly everyone went quiet. After some time a calm but powerful voice spoke out.

"The Ubuyashiki clan... they really hid it's trail well."

Muzan closed his book and placed it back on the shelf. He turned around and spoke to everyone beneath him.

"Ubuyashiki... continue your search. Capture a Hashira and get the location of the Ubuyashiki family, torturing a few of them might get me what I want."

"As you will."

All six of them acknowledged and were thrown out of the infinity fortress. A chair materialised out of nowhere, Muzan leaned on it and sorted his thoughts.

Without the original core ingredient I can't create the medicine, without it I can't become a true immortal. Damn that family for always getting in my way!

Silently cursing Ubuyashiki he got up and said.

"Nakime, did you find out what's happening with the slayers?"

A woman wearing black kimono with a single eye on her face stood respectfully before Muzan and said.

"No, Muzan-sama."

"Keep looking."

Saying his piece Muzan walked out. The platforms moved out of his path and created a door, he walked in and disappeared into it.