Chapter 1

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Rin was always the troublemaker, the fighter, the demon. His twin brother Yukio was quite the opposite ―calm, kind, brilliant and angelic. At this point in time, Rin wondered where he had gone wrong in life. His little brother was aspiring to be a doctor, and had gotten into the rather prestigious school for the elites ―True Cross Academy. As such, anyone who badmouths Yukio will have hell to pay.

Which brings Rin to his current predicament.

The raven-haired teen was flung to the ground by one of Shiratori's minions, after Rin punched the leader in his face for talking shit about his little brother. He was supposed to be going to an interview, he was on his way to the interview, but he was stopped by the boys who he had beaten up earlier for breaking the pigeons' legs.

Right now, he wished he hadn't.

He wished he had been the good little son like his father always wanted, and did his job right. He wished he had never laid eyes on the little girl of whom a demon had taken her scarf. He wished he hadn't seen anything.

But more importantly, he wished he was the younger brother. He wished he could've been like Yukio. Then maybe, just maybe, he would be packing for school and not out here, being tugged and pulled by his father, Fujimoto Shiro, as they try to escape the legions of demons that arose.

All of this was just too much to handle, but looking at the back of his father, he somehow felt relieved. With Shiro sprouting scriptures some of the demons vanished, while with others ―ghouls, if his memory is correct, were exterminated with holy water.

After a lengthy run, the two were finally back at the monastery, where Shiro dished out instructions to the other priests present. But inwardly, the aged man was praying and hoping that they'll last till morning.

When he led Rin down into a secret passage way, Rin felt his breath hitch.

"Dad...what...what's going on?" Rin asked, finally getting his voice back. "Why…?"

Shiro couldn't avoid this any longer. Seeing the flames around Rin's body today and with the teen being able to see demons now, the exorcist knew he couldn't hide it any longer.

"You're..." he started but trailed off, afraid of telling the boy the truth. Rin was his son, even though not by blood, but he was still his. Knowing the heartbreak that he'll face afterwards, Shiro didn't want to do it. But he had to. "You're the son of a demon and a human, Rin." he said, "And not just any old demon either, the demon of demons, the evil god, Satan."

"Wha…?"

Shiro pulled out the katana and handed it to his son, "This is the Koma-ken, called Kurikara. It's a legendary sword passed down since ancient times. Your demonic powers are within it, sealed by the scabbard."

"My powers?"

"This sword is more important than your life, never hand it over to anyone else. Don't let it go, not even while sleeping." A loud explosion sounded, startling both Shiro and Rin. Quickly, the Priest shoved the Kurikara into Rin's hands, and bolted up the stairs, but not without locking his son down there.

In his fright, all Rin could hear was the shouts and screams and chants from above. Covering his ears, he didn't want to hear it. He couldn't stand it. Until…

"Father!" one of the priests ―it sounded a lot like Seishirou― screeched in what seemed to be horror and panic.

Rin's eyes snapped open, and as if something possessed him, the young teen pushed away the covering and ended up back into the church. However, what he saw was what he didn't expect.

"Dad!" Rin screeched when he saw the Priest surrounded by demons and Astaroth gripping the Exorcist by the mouth. Seeing his father in such a plight, Rin looked at the Kurikara in his hand. And even though Shiro's warnings resurfaced, he didn't care. He needed to save his father and get some answers. But what the boy failed to realize what that Shiro didn't need his help. He was a capable Exorcist that had Astaroth right where he wanted him.

So when his eyes saw that Rin was about to draw the sword, he tried to plead for him to stop. He hoped that his eyes would convey the message. Unfortunately, he forgot that Rin was dense and oblivious as fuck.

Quickly, the raven-haired teen unsheathed the sword, bright blue flames dancing on his body, and on the blade. "Let my Dad go, you asshole!" Rin shrieked as he swung the blade in a grand arc, the majestic blue flames going forth and burning the demons away.

Astaroth released Fujimoto to escape from the incoming flames, thus giving Shiro a chance to retaliate. Without hitch, he began reciting fatal verses, while reaching for his gun which rested on his back. As the demons dissipated, Shiro aimed and pulled the trigger, shooting the remaining the demons whose fatal verses he hadn't said.

However, on Rin's side, the teen couldn't believe what was happening. He felt a little bit different, and seeing the flames dancing around his body, made Rin realize. He really was a demon. All this time, when he was growing up, people referred to him as such. He now knew that they had been right.

"Rin! Get back!" Izumi barked, snapping him out his thoughts. He was pushed by the Priest, who sprouted scriptures after scriptures to the demons that were gathering. Oh man, where's the daylight when you need it huh?

"But...but..."

"Rin! Just be a good boy and stay back!" Shiro's voice was domineering, as resonant as thunder. Shiro had wanted for Rin to get Mephisto, so that he could run away from all this, but because of their sheer numbers, the Priest hadn't gotten a chance. And when he looked on Rin's face, he knew the boy wouldn't have gone even if someone gave him wings.

For once, Rin didn't argue, instead he froze on the spot, eyes unable to look away from the spectacle before him.

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…

With daybreak finally upon them, the demonic attacks have ceased and Astaroth was successfully exorcised out of Shiratori. However, things were far from normal and weren't ever going back to normal here at the monastery.

Rin clutched the Kurikara, eyes burning with a mixture of emotions. And while he's had some time to mull over everything, he's come to understand why Shiro kept something like this hidden. The other issue he's currently facing is how he'd explain to Yukio all of this. Would Yukio even believe him? That demons exist and now they're all after him for being Satan's son?

Rin made a snort.

There's no way Yukio would believe a story as preposterous as that. He turned in his bed, unable to sleep. There was a loud racket downstairs, probably due to Astaroth crashing a truck in the church, the priests were patching things up until the proper aid arrives.

"Rin…?" the familiar voice called from the doorway. Shiro didn't know how to start, so he went with just calling his son's name first.

"Old Man..." the raven-haired teen started, propping himself up onto his elbows before getting into a sitting position. Deciding not to beat around the bush, Rin continued, "...tell me about this. You say I'm Satan's child right? What about Yukio? Won't he…?"

Shiro sighed but smiled all the same. Rin was being himself, caring for his brother even though he had a rough experience not too long ago. "They won't target Yukio. He's not the one with the flames."

"So…?"

"Yukio's completely human."

Silence befell the room after that, as neither party knew what to say. There were so many things that Shiro would like to tell Rin, but he didn't know how to breach the subject. Not after what Rin just went through.

"What if I became an Exorcist?" the young boy blurted out suddenly. Shiro couldn't believe his ears. He had to ask Rin for a double take, because that was the furthest thing from his mind. Rin, becoming an Exorcist?

"What? Why would ―?"

"You said that they were after me, right? What sense does it make to run? They'll just find me all the same." Plus, Okumura Rin doesn't run from a fight, he takes them head on and grinds them into dust. Demons shouldn't be an exception.

"But Rin! If you ―"

"If I what? If I don't draw the sword, I should be fine right?" Rin attempted to complete for the Father. "That's bullshit and you know it. Plus," he looked down at his hands. "I'm sure you can see it. I did draw the sword and now I look like a premature Elf."

A chuckle escaped Shiro's lips at that statement. "Rin..." He motioned towards his son before the look in Rin's eyes stopped him in his tracks.

He looked into his father's face, blue eyes twinkling with determination. "Let me be an Exorcist like you, Dad. That way, I can fight. I can defend myself, and those around me. If I don't, then one day when the demons come for me, they'll drag me to wherever easily because I can't fight. I'm sure that's not what you want."

Shiro couldn't deny his reasoning.

Plus, there was a possibility of Satan possessing Rin but if he got training as an Exorcist, then more than likely the boy will be able to resist him.

The Priest turned his face away, hands forming into a fist, unable to counter. After fifteen years of trying to raise the boy as a human, all of it went to hell in a couple of hours. Shiro never wanted to drag Rin into this world ―a world full of Exorcists and Demons and their ongoing, seemingly never-ending war. Still, who would've thought that Rin's first choice was to be an exorcist? So having weighed his options, Shiro relented.

"Fine. I'll see what I can do for you, given your abysmal grades from middle school."

"What does my middle school grades have to do with anything?"

Shiro sighed. "Because the only school that I can get you into isn't a full-time exorcist school. You'll have regular high school classes in the day and Exorcist Cram School in the evening."

"What?!" Rin screeched, even Shiro being shocked that the boy's voice could get that high. "Then send me to a full-time exorcist school then! It's not like I can integrate into society anyways! Look at me! I'm an Elf!"

Shiro sighed for the umpteenth time. Rin didn't even look like an Elf. The boy was just exaggerating. "Rin, this school is perfect for you. I can keep an eye out for you, instead of sending you off somewhere where I'll be fretting whether or not you're burning down the place accidentally."

Rin huffed. "You make it sound like I'm a budding pyromaniac."

"Plus," The Priest grinned, totally ignoring Rin's statement. "You'll have Yukio for company."

Rin's eyes brightened at that statement. "I'll be going to the same school as Yukio?" Shiro nodded. "Yay!"

The aged Exorcist nodded in triumph. Just mentioning Yukio's name and Rin automatically forgets everything he was saying earlier.

"Can I go take a walk?" Rin asked as he rose to his feet.

Shiro didn't know what to say. He wanted to let the boy go given that it was daytime, demonic activity would be on the low. However, if going by yesterday, a demon like Astaroth could possess a human and target Rin. He couldn't handle another headache like what happened prior.

Shiro's face hardened. "No. I can't have you out there defenceless again. I don't know when Astaroth will re-possess someone else and attack you."

"Tsch." Rin clicked his tongue and turned his face away. Shiro's eyes narrowed at the boy. Now there was the feisty Rin that he knew. "Fine. I'll be somewhere about this place."

And with that, Rin left the room and went somewhere on the compound. Frankly, Shiro could care less where he wanted to go, as long as it was still within the monastery. But the Exorcist didn't know whether or not he should be relieved. Looking at Rin, he seemed to be taking things easy, but Shiro didn't think that was the case. Rin was hiding something underneath this...happy-to-be-going-to-the-same-school-as-Yukio attitude. He knew Rin had a frightening temper, and expected him to flare up, sprouting insults and nasty things about all this. But instead, the boy reacted calmer than he thought.

"There's something he's not telling me." Shiro mumbled, but the exorcist figured that only time will tell.

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…

"Fuck!" Rin hissed as he punched the wall, creating a crack in the infrastructure. He was around the back of the monastery, where no one could see him. His anger had reached a boiling point and needed to de-stress. And since Shiro had told him he couldn't leave the compound in fear of that demon attacking him again, this was the only choice he had.

Rin cursed and punched until he totally blocked out his surroundings. He hated the fact that everything was hidden from him, he hated that his father lied to him his whole life, he hated that now, he'll have to be an Exorcist in order to handle the demons that will be coming after him as of now.

He's never once thought of his future, unlike Yukio who wanted to be a doctor and strived for it. He was more of the "go with the flow" kind of guy. And while the lady at his interview warned him about it, right now, with how he was feeling, he could care less.

His life was turning into a fucking nightmare all because he was a demon and Shiro hid it. Well, given his status, Rin had understood why the Old Man chose to but still, he should've told him under better circumstances. Why did a demon attack had to be the trigger for him to find out all this shit?

"Fuck!" He practically screamed at the top of his lungs. "Why is everything bad happening to me!? Why!?"

"Rin!" A familiar voice brought him out his raged stupor. He turned to see Shiro running towards him with a worried look on his face before grabbing his bleeding knuckles that were healing rapidly. Rin noticed this and swiftly pulled back his hands as if on instinct.

"What are you doing here, you old fart?" He hissed.

"Rin, look ―"

"Shut up!" The teen barked. "You lied to me! You fucking lied to me my whole life! When people called me demon, a monster, you told me that I was human! How could you?!" Rin was so overwhelmed that tears even started to form. They rolled down his cheeks and the boy couldn't be bothered to wipe them.

Shiro had enough of this. "Be quiet! You may be born of a demon father, but you aren't! What makes a demon huh?! Humans are sometimes even more demonic than the demons themselves!" He walked closer towards the boy and grabbed him in the collar. "You aren't a monster Rin. You are a kind soul, who'd even fight guys for shooting pigeons."

Rin gasped. "How'd you…?"

Shiro smirked. "A father knows everything." His face softened when he cupped Rin's cheek and wiped the tears away with his thumbs.
"Listen, you aren't a monster. Monsters are heartless creatures who only know how to destroy, but you Rin, you use your brute strength to help others, even animals. The last time I checked, monsters don't do that, right?"

Rin couldn't hold it in any longer. He broke down in tears into his father's chest. And Shiro, loving when his boys came to him for everything, rubbed the boy's back as a means of comfort.

"But don't worry, Rin, everything will work out. It won't be easy since everyone will be after you, but I'll protect you."

Even if it costs me my life.

Thanks for reading!