Genres: Friendship, Romance, Humor, Adventure, Hurt & Comfort, Supernatural and pretty much a bit of everything else.

Characters: Rin, Suguro, Shura, Amaimon, Yukio, Fujimoto, Satan.

Pairing: Eventual Rin x Suguro.

Warning: Slight gore, swearing/cursing/cussing, possible OOC.

I don't own Blue Exorcist!

00 – Prologue

"You're taking him to Gehenna?"

"Yeah, he's my son, after all. Hah! I'll bring him up to rule once I'm gone!"

"What about Yukio?"

"He's human, I could care less."

". . . I'll take care of him."

"Whatever."

"But those two shouldn't be separated."

"Do I look like I give a shit?"

"I think you do."

"Tsk, fine, Rin can visit you two every now and then."

"I never specifically said that. But sure, we'd love Rin to visit!"

"Fujimoto. . ."

"Yes?"

"I hate you. . ."

Blue eyes tinged with red blinked open sleepily as many small demons scurried around, crowding in a circle as they surrounded the out of place figure in attempt to get a better view. It wasn't often that someone of his rank was found in a place such as the forest that housed low-class demons which he had been found sleeping in, after all.

The teenager –no more than fifteen years old– lay peacefully on the red-brown grass that was oh-so-common in the lesser parts of Gehenna, seemingly decaying in colour yet still not dried up just as the trees around him. His elf-like ears listened as the low-class demons quietened down and looked at him in awe- his horns made of blue fire a dead giveaway as to who he was.

I should probably leave before more come. . . Sighing, the teen pushed himself up into a sitting position with clawed hands, tail swaying agitatedly as he picked up his sword from its place next to him.

The other demons continued to observe, some whispering to others quietly as he stood up, dark-blue hair messy and grass-covered just as much as the back of his worn clothes. Growling irritably at them –an empty threat of which they ignored– he stretched his arms above his head, overly large blanket scarf lifting up to reveal a worn tank-top and baggy pants.

Noticing that his unspoken warning had gone unnoticed he grumbled in defeat, bare and clawed feet crushing the grass as he begun to leave. What should I do now. . . ? He thought, ignoring the disappointed whines around him as he smiled, looking up at the distorted sun of his home realm. I think I'll go pay Yukio a visit!

Nodding to himself with a grin, the teen positioned the claws on one hand in preparation to draw blood from his other arm, giving only a slight wince at what he had to do. Even if he had long since gotten used to the process, it was still a gruesome requirement in order to open the Gate which lead to Assiah.

"Rin!"

Just as nail was about to pierce skin, the teen turned to the familiar voice that had called out his name in urgency.

"Amaimon?" Rin questioned as the Earth King jumped over the low-class demons in attempt to get closer to him. "Wha'd'ya want?"

Amaimon blinked, his expression bored. "Father wants to see you."

Rin bought a hand to his forehead, groaning as his plans to visit Yukio were ruined with the other's words. "Why meeeee?"

Giving a nonchalant shrug, Amaimon said; "Dunno, but father said that it was important. And he didn't seem all that happy either, what did you do this time?"

"Eh? Dunno, but. . ." Shoulders slumping, Rin sighed in defeat. "I should probably go see him now then."

The throne room was large and lit by many candles being fuelled exclusively by ominous blue flames, the demon that sat on the throne alit with the same fire, burning fiercely around him yet not dealing any damage. He was Satan, after all, and they were the symbol of his power and rule.

"Yo, old man!" Satan's eye twitched as his ninth son barged into the room, addressing him with casualty he normally wouldn't stand for. "What's up?" Said son asked impatiently.

The King of Gehenna sighed, massaging his temples as he took in Rin's appearance. "Rin, would it kill you to put on some proper damn clothes for once? No son of mine should be seen looking like that- and from what I hear in Amaimon's territory no less!"

"Don't wanna." Rin stuck his tongue out childishly before gesturing to his current attire. "These are comfy!"

Satan growled, flames flaring in anger. Anger which his son ignored, as per usual. "How many times do I have to tell you-"

"Yeah, yeah, whatever," Rin cut in, "we go through this every time. You tell me to wear something 'more fitting for a demon of your nature' –meaning fancy shit, which I hate–, I refuse, then we argue and I always win. Let's skip that today, 'kay? Okay! So," he crossed his arms, "why'd you want to see me?"

Satan 'tsk'd', unwilling to admit his defeat. Eyes narrowing dangerously, he spoke; "I hear that you want to become an exorcist."

His son's eyes widened, taking on a slightly defensive stance. "Where'd you hear that?"

The King smirked, pulling out a mobile phone and waved it around. "A certain little Paladin told me~" He sung in a sickeningly sweet tone.

"Fuck," Rin cursed, "damn it Shiro!" Panic filled his body, what would Satan do now that he knew?

"I would try to rip your throat out," Satan ground out as though reading his mind, "but I can't fucking move properly."

Blood going cold at his father's words, Rin stared at Satan. What. . . ? He can't. . . ? That means-!

Grim silence filled the room, neither occupants daring to speak at the revelation. It didn't last long, however, as Satan decided to talk once more.

"Why the fuck do you think that becoming an exorcist of all things would be a good idea?"

Rin gulped, clenching his fists as he straightened up. His father was back onto the topic of exorcists, and that meant that there was the slightest hint of a chance that the King would hear him out- hopefully. Swallowing once more, he took a step forward. "I-"

Satan didn't give him the chance to say more than that, however, cutting his son off. "It's because of your brother and that other one, isn't it?" He narrowed his eyes as Rin's hand trembled slightly, "you don't want to be torn away from them, do you?"

Rin bit his lip, nodding. "Yeah. . ."

"That's selfish."

"I know."

"You are a demon," Satan reminded, "and the Crowned Prince of Gehenna no less."

"I know," Rin shot back, "but I'm also half human!"

The King closed his eyes, looking up at the high ceiling with a frown, eyebrows furrowing deep in thought. Rin waited in silence, body tense in the case that his father would lash out at him like he sometimes did. It was never pleasant to be around him when that happened.

"Seven years."

Rin blinked in confusion at the two words, spoken in such a tired tone that he had almost doubted his father had been the one to say them- almost. Satan wasn't snapping at him- in fact, it seemed as though all previous anger had left the King. "Wha. . . ?"

Satan sighed, "even I am not immortal. My flames are weakening."

'I can't fucking move properly.'

Remembering Satan having said those words and, connecting the dots, growing dread filled Rin. "So you only have seven years left-"

"At the very most." His father cut in. "Within those seven year I expect you to have learnt enough about both Assiah and Gehenna to become a King fit to rule this world. How you go about doing it, I don't give a shit, but do keep in touch with your poor old father." The last part was dripping with sarcasm, the King gesturing at his phone.

Rin's mouth fell agape in shock. "No way-" A grin tugged at his lips, "so then you're letting me-"

Satan returned his son's grin with a wicked and manipulative one of his own. "Sure, this is my win after all."

"Huh?"

The king's grin widened even more at the confused look he was being given. "Don't tell me you didn't know! Exorcists," he elaborated, "are required to wear specific clothing that, I hear, while not being 'fancy shit' –as you call it– is still proper attire."

Rin backed up, a horrified expression across his features. "N-no way."

"It's true~"

"F-fine then! I'll wear their damn uniform!" Rin declared with a stutter, moving to leave the room, "I'm gonna go see Yukio now you bastard."

Satan rolled his eyes. "Oh yeah!" The King called out just as his son was about to leave, "I hope to be seeing some grandchildren before I kick the bucket- and a mate as well! Daddy needs to make sure you find yourself a good mate!"

Rin's face flushed as red as a ripe tomato, stumbling over his own feet as he turned to glare at his father. "What the fuck, old man!?"

00 – Prologue: End

Note: To celebrate the confirmation of the anime being bought back in 2017, I have started a new Blue Exorcist story! (But shouldn't I be working on my other stories? Pfft, nah! . . . Maybe. . . ? Meh.) I'm a little too hyped for the new anime!

At any rate, for this story to work I had to tone down Satan's. . . asshole-ness? Yeah, I'll call it that! I did so because while the concept of this story does have extreme potential to be dark-themed, I prefer to write on the lighter side with things like this. Although that isn't to say that it won't have any dark themes in it, hehehe. . . Anyway! Need to stop ranting!

Well. . . I guess that this is my first time attempting to write a multi-chapter romance story, so I would be grateful if anyone had and advice to give! Feedback is also a much needed fuel to my motivation and laziness. So yeah, that's welcome too!

I do hope that the prologue was enjoyable to read.

'Till next time! - ef07