Even though he was Akuma on the inside. He's now called Jaune Arc. It's the name that his new mother have given him.

Honestly Akuma preferred his old hairstyle then this new one. He'll have to deal with it. Living a few years in this world Akuma who is now Jaune Arc learned how things work here.

There was a subspecies of human with animal features called faunus who are discriminated because of their animal traits which he found to be stupid. It reminded him of slavery and how the poor was mistreated terribly.

He had also learned more about the Grimm. He found out several things about these puppets. He learn that the Grimm don't need to ear or sleep. Apparently they attack if they feel fear from a person. He should use the Satsui to make the Grimm fear him but for now he should wait.

Jaune has grown closely to his seven sisters especially his older sister Saphron who is dating a nice lady named Terra.

Jaune decided to go to the library and found out about these elite group of warriors called huntsman trying to fight the grimm. Knowing this new info it was his best option he decided to train his new body to control the Satsui.

He started with a simple training regimen which he quickly and intensified.

Every single day he would practice his punches and kicks with weighted armor. It was extremely heavy and he continued to train until he was exhausted from his arms and legs. Day in and day out building up his strength and arm muscles up.

He practices the Gou Hadoken at his target practice made of wood. The target goes down with ease. He then uses the Tatsumaki Zankuukyaku on a tree. The tree is destroyed as if it was made from paper.

For his legs he started doing running regimen with attaching two small rocks on his ankles to add mass to his leg muscles.

Jaune found a giant boulder and he determine that it weight 40 tons. So he did the most logically option and it was strapping the giant boulder onto his back. He started to climb on the trees with the giant boulder on his back. To improve his upper and lower body strength and he then does sit ups while hanging upside down.

He jumps off from the tree and removes the boulder and the weighted armor. He crack his bones and jumps super high in the air that he reach the clouds.

Jaune remembers in his old life that he had a strong offense, but a weak defense. So he'll improve his defense as well.

In the middle of the night, he would wake up and make himself his old gi that he used in old life. And then he blinded himself to practice his skill in the dark. He had to adapt to the dark as a actual demon.

Jaune did meditation which his sisters found very weird. He did some yoga to make himself to be more flexible as possible.

One of his most intense regiments is controlling the Shinku-Hadoken and small version of the Kongo Kokuretsu Zen. He remember these were easy to pull off in his past life but now he's a young kid again so he'll just have to endure the struggle.

He then continues to practice his martial arts skills until his body memorizes his movements and learn some new skills.

There were many trees around near his house so he started jumping side to side on the tree like some kind of ninja or assassin.

His sisters and mother  were concerned when he came home all bruised and blood on his arms but he told them that he was fine. But they were wondering what the young arc was doing when no one was looking.

They found it especially strange and worry when they found Jaune just sitting on a broken tree mediating on one knee while a huge boulder on his head which look to be extremely painful and dangerous. They found that to be astound for someone like Jaune's age.

Overtime Jaune's body grew into that of a warrior and he felt like he was back to his old body but with more muscular.

When he went to school he trained his mind with all the subjects. Especially history, math, english, writing, science , and sign language.

After school he snuck into the library he got every book that had knowledge of this world. He first read about someone called Ozma and Salem. The second book was about the two brother gods. He thought those two are idiots.

"I'll defeat anyone including the gods themselves!" Jaune said to himself. He had to learn every weakness to the Grimm very fast because he knew that he wasn't going to be a kid forever. If he wanted to be best of the best he had to know everything.

When he was done with the books he went straight for the computers. He typed in every team members he could find. So when he gets older he could challenge to a fight. But one got his attention. The team name was STQR. He found out that the team members were the strongest team and their leader Summer Rose is going to be sent on a mission solo.

He also found out about Raven Branwen and her tribe clan. He found the location and discovered out about the Spring maiden.

He'll go out tomorrow to hunt down the Spring Maiden before anyone else does. And to follow Summer Rose because for some odd reason he can feel sadness in the air.

In his spare time his sisters and mother were teaching him how to cook, clean, treat others with respect, play well, and rest well. His father was teaching him how to get girl but he found that to be foolish. 

His youngest sister was born. He was overprotective over her. She was so small and looked like an angel. When she was five years old she asked Jaune if he can sing her a song to make her fall asleep.

Jaune remembered that both his father and mother taught him how to sing. So he sang her an old lullaby that he remembered in his old life.

https://youtu.be/63fY3xJd4u8

And with that single lullaby his youngest sister went to sleep. "I will protect you and our family who stands in my way of reaching the heavens." Jaune whispered and he closed the door.

In the next day at school, Jaune was a straight A student in the gym and he always the best and the other boys were jealous of his skills and strength and they envied him while many girls wanted him for themselves.

He had no time for dates or anything foolish. Jaune had other important things than dating these weak girls.

He found one of member of Team STQR and it was Summer Rose and he secretly followed her wherever she was going.