In Gehenna
6 years later

Through the dark corridors of a newly built castle strolled a young looking teenager. One would think of him as normal if he didn't have longer ears and blue flames coming out of his black tattered cape. He wore elegant navy blue and black clothing under the ruined cape. With long strides, he walked through the castle. Maids and butlers alike bowed before the young man. This was Rin. And on that day was his birthday. After so long he could finally be able to go back.

Almost running, the young prince passed several halls and numerous doors of his castle. "That old man better keeps his promise!"

Sliding down the stairs he could finally see the exit. The main door. The butlers hurriedly opened the door. What greeted him was the sight of a forest that stretched miles away. His castle was located at the top of a massive mountain. Without hesitating he jumped down and spread his ebony wings. With unbelievable speed, he flew towards the center of Gehenna, where the royal castle of his dear father resided was. "Father, I'm coming!"

At Satan's castle

"I know you want to go!"

"No, I don't. I-"

"Bro, don't even think about lying to us. We've known you since you were born!"

"I know, but I'm telling you. I don't-"

"Shush, father might hear us!" a scarlet-haired male whispered. The three young demons looked around.

Silence

"Good at least we know that we didn't get father's attention." the blue haired youth sighed. But just then, somebody came running in the room. "Hey Bro! What's u-" then that mysterious figure ran into a wall.

...

"HAHAHA!"

"Oh father..."*

"Pfffffff-"

That figure was Rin, their youngest brother.

"Ugh, I thought I could already control my speed" Rin huffed clutching his head while still on the floor. Then he looked up to see three youths towering him. "Amaimon, Azazel and Iblis? What are you guys doing here?" He asked them, got up and brushed away dust that settled on his knees.

"Just convincing little bro to ask father to come with you", Iblis answered Rin indifferently, shrugging, not giving a notice of his said brother to have an expression that said 'Seriously?'

"Why don't you want to come?", ask Rin instead, tilting his head like a cute puppy asking for food. "Humans." Amaimon told him. "I don't want to go there and participate in brothers plans" as he said that he crossed his arms and walked to fathers office. "Wai- Wait up!" Rin called up to him and scrambled to his brother.

Iblis and Azazel just stared at each other and shrugged, following their youngest siblings.