A QUICK AUTHOR'S NOTE! Quite frankly, I'm new to this website, so I have no idea how this works. I'm not a huge anime person; I only started watching the past two months. After reading Ao No Exorcist, however, I fell in love with it. Not many animes have gotten me that intrigued. I've watched the OVA, read the manga, and in an attempt to find more content to hold until the next chapters, I found Writer's Obsession's Story Challenge. Challenge accepted...
"Wake up, Sir!" A grotesque demon-butler yelled, shaking Rin Okumura awake. After a few seconds, Rin woke up screaming.
"Ch-Chill! I'm up!" He yelled back, pouting. The demon-butler sighed, standing up straight. He gave Rin an apathetic look. "You should've been up an hour ago," he stated, looking at the boy. He sighed before walking out of his room. "Breakfast is ready when you are," he said obediently before seeing himself out. Rin grunted as he forced himself off his bed to sit on the side of his bed. He rubbed the gunk from his eyes and stretched to yawn. His alarm clock indicated that it was 8 AM. Another normal morning in Gehenna.
Rin got out of bed, putting on his light blue bunny slippers. They were a 14th birthday gift from Mephisto, his half-brother. Almost two years later, the slippers have shown no wear whatsoever. Probably some spell or something, Rin thought to himself. He made his way towards his bathroom to brush his teeth. He didn't need to, as not many demons did, but it was different for Rin. Seeing as he was half-human, he felt weird whenever he neglected human things like basic hygiene. He was probably the only person in his family who consistently cared about his cleanliness. He squeezed toothpaste onto his brush and began to clean his teeth. In the meantime, he thought about the things he'd have to do today. Well, I know I should train, he thought to himself. Amaimon is still sour from losing our last fight, so I can't stop now. Maybe explore Gehenna some more. He sighed, spitting his used toothpaste out and rinsing his mouth with water and mouthwash. "Devlishly fresh," he said to himself before leaving his room.
"Morning," he greeted as he made his way to their dining hall. Mephisto gave him a kind wave.
"Those slippers look great as ever," he commented, taking a bite from his toast. Rin flashed him a smile. "They match my flame too!" He said happily.
"And that's why I got them for you," Mephisto replied, laughing. Rin took a seat next to his older brother, grabbing a piece of toast from the large serving plate in the middle. "Any plans for today?" Mephisto asked his half-brother.
"Hm... Not really," he replied. He took a bite of his food before adding, "Wait why are you here? Shouldn't you be overseeing True Cross?"
Mephisto grinned, his fangs ever-so-slightly showing. "Well, it's almost your 16th birthday! I'm not able to come on the actual day, so I thought I'd visit for a bit now. Do you want anything for your birthday?"
Rin smiled, thinking for a bit. "No, I'm fine," he answered.
"Tsk," Mephisto said. "You always say that. Guess I'll have to guess what you want." He stuck his tongue out at him before checking his watch. "Well, I must be leaving now, so I'll see you soon." Before Rin could say goodbye, Mephisto walked up and put his key into the kitchen door, revealing a bit of Assiah, his office to be specific.
Assiah, Rin thought to himself. Of course, he'd visited a few times, but never enough to fully immerse himself. Maybe he'd ask Mephisto to take him for his birthday. Hopefully he'd be able to spend more than an hour or two there like he usually did. His thoughts were interrupted by a piercing white light flashing before him. "H-Hey!" He yelled out, but no one was in the dining hall. Kormein, one of the family's butlers walked into the room and dropped his tray upon seeing Rin. "S-Sir! Are you okay!" He yelled back, running towards him. He stuck his hand out for Rin to grab, but it was too late. With the blink of an eye, Rin was gone.
Yukio Okumura was frozen in shock after summoning the Son of Satan. All the other students in his cram class also couldn't move. Only Professor Igor Neuhaus was able to move, swiftly grabbing his compass. Normally, he used it to draw large magic circles, but the tip of it was coated with a special-grade Holy water to protect himself from close-range demons. He brought the tip to Rin's throat, ever so slightly touching him so it barely burned him.
"Rip the paper now," Professor Neuhaus said, looking at the boy. "We've seen enough." Yukio gulped and nodded, shakily grabbing the paper.
"W-W-Wait!" Rin yelled, his blue flames growing, causing Yukio to freeze again. "Wh-Where am I?" He asked, looking at the teacher. Neuhaus smirked, looking at Yukio. He held the compass closer to the demon's neck, his hands slightly trembling. Despite his fear, though, his resolve was strong; he had no intention of talking with the son of Satan.
"You're in Assiah," Yukio managed to spit out after taking in a deep breath. "I summoned you, Son of Satan." Rin blinked, evidently confused. He cautiously moved his hand to his sword, which was slung around his shoulder, causing panic in the room.
"Yukio! Rip it now!" Neuhaus repeated with more force. Yukio? Rin thought. I've heard that name before. Don't tell me...
"I said wait!" Rin commanded, his voice lower. His flames aggressively swayed around his body. "Yukio... Okumura?" He said cautiously, a smirk appearing on his face. He pushed the hair out of his face.
"H-How do you know my name?" Yukio asked. Rin only laughed, his voice sounding more sinister by the moment. Yukio grabbed his gun from his belt and pointed it at Rin. He was allowed to carry it now that he was an Exwire and the top of his class, but he wasn't authorized to use it in battle. "I said how do you know my name!" He repeated louder.
"You shouldn't raise your voice at me," Rin said, smiling. "After all, we're family."
"Dad, what's Assiah like?" Rin asked. The two were in the training room. Rin was only eleven at the time.
"Oh... Assiah is wonderful," Satan responded. He swung his wooden sword at Rin. He dodged his attack by lunging to the left; after picking himself up, he goes for the counter-attack. Satan easily blocks his movement, and goes for another shot in the same place. Throughout their fight, they continue to converse. "Your mother is from there," he says. "It was beautiful; full of life and amazing things."
Rin runs straight ahead, jumping over Satan to stab his back. He moves a step forward, turning his body and blocks. "Is it really?" Rin says amused. "What do you miss most about Assiah?" This time, he's on the defensive. He blocks Satan's attack, moving back a few inches from the force.
"Hm..." Satan thinks. "Other than the environment, probably your brother." Upon hearing this, Rin's concentration is broken. Satan taps Rin's side with his sword. "I win," he gloated with a smile.
Rin dropped his sword in shock. "I-I have a brother?" He asked, confused. "You're kidding, right?" He looked up to his father. Satan picked him up and carried him to a large, dark purple throne. He sat down, putting Rin on his lap.
"I guess you're old enough to know," he says. "Yes, you have a brother. A twin, actually." He smiles at the boy, but Rin looks at his father angrily.
"Why did you leave him there, then!" He asked, a little bit of anger in his voice.
Instead of being angry back, however, Satan looks at him sympathetically. "I wished to, but he's not like you. He doesn't have my flame, so he would be too weak for Gehenna. I'm sorry." He gave Rin a hug.
"Will I ever get to meet him?" He asked, this time, his voice was a bit sad.
"Yes," Satan responded after some thought. "When the time is right, you will see him."
"That's enough!" Professor Neuhaus yells, pushing his compass onto his body to render him weaker. Rin yelled in pain, his flames flying angrily for a second before completely dying. He fell onto the floor, unconscious, causing Neuhaus to grab him by the neck. He snatched the summoning paper from Yukio. "I'll be back," he announced to the class. "This period will be a study hall for the time being." He walked out the room, holding onto the boy.
"W-Wait!" Yukio yelled, running towards him. He left the room with him. "Where are you taking him? And what did he mean we're family?" He asked, grabbing Rin's tail. Professor Neuhaus jerked Rin away from Yukio, making him let go. "Don't touch him! He's the Son of Satan!" He continued to walk away, but stopped to think. "I suppose you do deserve to know, though. Come with me." Yukio looked back at the classroom for a second before running behind Professor Neuhaus.