{World of Birsha:}
In this world live almost all demons just like of the humans world. But each demon here possesses unique strength and skill in fighting. And one of them is the five brothers "Azaroth". They are known as "The Strongest Demon" in this world.
One day there was a celebration in their town and in the middle of the celebration the demon citizens were shocked. They witnessed the flying weirdos who could be said to be a "Human" without a signal they attacking the demons with something that emitted a powerful weird color that killed thousands of demons. A few minutes later, the human successfully exorcised the demons and left only the five wounded brothers. Human's approached on them and said.
"We will take y'all captive and all of you will be our servants!! HAHAHAHA!!"Unknown Human Said and then Laugh.
The five siblings were tied with a rope that was impossible to break. Once they entered a portal and entering the siblings they heard happy humans looking at them as if they were still happy with what happened to them. Rikuo couldn't stop himself from trying to escape but he was stopped by her sister Daeva. Until they were brought before the five leaders of the five towns.
Other people took Rikuo's Siblings and left for its towns. While Rikuo was brought to the town which is called "West Dark Village or Nargia".
[These humans have made great mistakes other than attacking and killing demons. They made a big mistake in separating Rikuo from his siblings. Because Rikuo can awaken his power to intense emotions and because of this there will be a threat that Rikuo's siblings fear]
When they arrived in the Town of Nargia. Rikuo was immediately put in a strange prison to prevent his escape. One night during Rikuo's rest time. A group of people entered Rikuo's prison and they beat him. Rikuo take all the attacks that are made on him and a in the middle of beating him. One of those who punched rikuo suddenly fell down and lost his breath.
"Hey you!! wake up!!"Another Guy Said.
But he had no pulse and breath so suddenly the group of men stopped and when rikuo looked at the people who had beaten him his eyes turned black at the same time and a large wing grew behind him along two horns on his forehead.
[Rikuoshina the real Rikuo woke up again.]
Rikuo raised his arm and cut the neck of the group of human at the same time and came out. The people were alarmed and suddenly went to the place where Rikuo was. But no matter how many of them they still couldn't match Rikuo's strength and speed. He knocked all human down in an instant. After that it came out of the cage where he was and floated on top.
"All of you will paid!!"Rikuo Anger Said.
Rikuo released a purple energy ball in his right hand and a green energy ball in his left hand. He combined it and formed a dangerous attack. Rikuo was about to throw it when it suddenly disappeared and a man appeared in front of him at the same time And rikuo was kicked away.
Rikuo saw his attack explode in the sky like a firecracker. He was very angry but when he attacked the man who kicked him he couldn't do it. Because when he stood up again the man appeared infront of him and gave him a taste of his "Black Energy Ball". When the man did so he immediately made a sealing circle and made four copies of himself and circled the circle where the demon was placed.
[The man who rushed to Rikuo is none other than Natan the father of Feitan. He is also the 10th Hero of the Nargia.]
When the sealing he was doing was over the demon suddenly struggled so Natan had a hard time but he was surprised when he saw that everything was normal and saw the chain wrapped around the demon,
"T-this chain"Natan Confusedly Said.
Natan was stunned by the chain as if he knew who it was from and suddenly his wife Alice appeared in the middle of his demon imprisonment.
"Just focus on what you're doing, I'll take care of calming down in this one"Alice Suggested.
"Alright, thank you Alice"Natan Replied.
And natan successfully imprisoned the demon within a scroll and immediately hid it in a secret place that only he could enter.