AN: This is my first DxD fic. Just a few changes since this is the DxD world. Chiho and Sadao still work at MgRonalds, and Sadao is still from Ente Isla. Chiho and Lucifer are now 17 and second years. Sadao and Emilia will be 18 and third years. Ashiya is a legal adult and works for a convenience store as a supervisor. This takes place after the end of season 1 of Part Timer and when Issei crashes the engagement party.
Chapter 1
Sadao stood beside this red-haired man Sirzechs who claimed to be a devil. They were at some kind of engagement party for the man's younger sister. Sadao was floored to see two of his school's so-called great ladies Himjiema, Ankeo, and Gremory, Rias there. Neither looked pleased and he could tell why. Gremory seemed to be the man's sister and it looked like she was being forced to marry some pompous jerk who kept talking in the third person. If this were Ente Isla he would have used his position as the Devil King to stop such a thing. It's not like arranged marriages were unheard of but he had more of a fondness for how humans found love and married. Maybe it was because that angel rescued him all those years ago.
"Don't worry I have a plan. Hopefully, the boy pulls through." Sirzechs told him when he noticed Sadao's frown. To think this all started because some upstart angel kidnapped his friends. While he was repairing the business district of Kuoh the man had appeared just after Sadao threw that annoying Sariel throw a one-way portal to Ente Isla. The man had come prepared for a fight. He was not expecting to see a half-naked powered-up Sadao Maou repairing the city.
(Flashback)
"What the hell is happening here?! Who are you and why are you only in your underwear?!" The red-haired man charged up some kind of spell aimed right at him.
"Really man? Kinda busy fixing this mess." Sadao snarked back. He prayed his form would be enough of a deterrent to prevent this man from actually attacking, he was running on fumes. He did not expect the man to wave his hand repairing the rest of the damage and started his spell up again.
"There now answer my questions or else." The man was not happy. Sadao decided to keep his hands up and release his form. That certainly took the man by surprise.
"Well, how much do you want to know it's kind of a long story?" Sadao asked. The man was clearly more powerful than him at the moment.
"I have an appointment so give me the abridged version from the start. How did someone as powerful as you end up in this city without my knowledge?" The man glared at Sadao.
"Well kind of a funny story there, I'm not from this world and it all started when the hero attacked." Sadao had given the abridged story explaining how he was the devil king and how he had escaped to this world just to learn that the magic here was incapable of his own which force him and his loyal ally to have younger bodies.
"That's one hell of a story you have there, unfortunately, I'm running late for an engagement party so we must go." The man spoke up after stopping his spell.
"Well if that's the case I'll just be… wait, we?"
(Flashback end)
Sadao was brought out of his reminiscing by an explosion. The other guests and he turned their heads to see what caused it. He was certain this was all some kind of weird dream because Issei Hyoudou one of the three biggest perverts in the school stood there with a dangerous-looking red gauntlet.
"Issei!/Rias!" Rias seemed worried but Sadao could hear it in the boys' voice, Issei had a plain.
"Who are you boy?!" Riser looked like he was about to have a fit.
"I'm Issei Hyoudou and I'm here to bring Rias back where she belongs!" Sadao was impressed sure but could Issei pull it off?
"How dare you?! Seize him!" Riser ordered. Sadao grew interested in the events and how Issei would get out of this only for Ankeo and two people to attack the guards. He was certain they went to Kuoh too but he couldn't remember them off the top of his head.
"Right on time. Now excuse me why I give us some entertainment." Sirzechs whispered to him. "It's just a little entertainment I prepared." Sirzech walked to Riser. Sadao noticed almost all of the others showed Sirzech a lot of respect and even those who didn't kept their animosity to themselves.
"What do you mean by entertainment?" Raiser demanded. Some other important individuals looked angry at such an outburst while others looked at Raiser like he grew a second head.
"I watched the game Riser and I was honestly underwhelmed by how poorly you did against a bunch of inexperienced players." Sadao chuckled at the facer that pompous jerk made. Sirzech continued pointing out the flaws of whatever game was played until something interesting was said. "You there!" Sirzechs looked at Issei who stepped back. "It's said you possess the power of the dragon, and I for one would like to see it. That's why I had Grayfia bring you here this evening."
"So that's what Sirzech meant when he said he had a plain." Sadao wonder allowed.
"Indeed Lord Lucifer is always planning ahead." The maid that had been standing by him finally talked.
"Ah! Jeeze I forgot you were there lady." Sadao cringed as his attempt at a joke was met with a glare. "Hey, hey, there's no need to glare I'm sorry."
"Well in that case I want Rias Gremory." Issei declared. Wait what had he missed while talking to the maid?
To say the battle he witnessed was intense was an understatement. It was like watching duels in his court back home on Ente Isla. Risers healing was insane but surprisingly enough Issei had a plan for that. It seemed like in this world Devils and demons were harmed by objects of the church and somehow Issei was able to use them with no pain at all giving him the upper hand forcing some little girl to interfere and stop his final punch. Sirzech led Sadao and the maid to the balcony.
"This battle is done Issei Hyoudou is the victor," Sirzech announced. Ankeo, the two others, and Rias all came to gather and congratulated Issei with Rias hugging him causing Issei to have his classic perverted grin.
"Well, then let us get to why I brought you here… Sadao." Sirzechs turned towards him.
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"And after a long explanation on both of our parts he gave me an offer." Sadao lend back at the breakfast table and looked at Ashiya.
"What did he offer my liege?" Ashiya leaned forward.
"God these Devils sound like the old nobles back home." Lucifer tugged at his blazer. "Why the hell am I going to this school again?"
"Do not interrupt the great Devil King while he speaks! You go to that school because if we left you here you'd spend all day on that computer I bought you and waste all our savings." Ashiya growled.
"Hey, that last tracker saved our butts." Lucifer retorted.
"That's enough you two!" Sadao groaned they never stopped fighting about money. "As I was saying he offered me a place in his family."
"How dare he think…"
"He's basically the Devil king here. It was a good deal. With that offer came these." Sadao waved his hand and a box appeared.
"Sire you shouldn't waste your magic like that." Ashiya reprimanded.
"Well anyways," Sadao waved his hand and Ashiya ground his teeth. The box opened revealing a chess set. "These came with the offer and their…"
"Really and you complain when I get scammed. What's so great about only one set of pieces to a game that requires two sets and the king piece is missing." Lucifer laughed.
"Will you all stop interrupting me!" Sadao was this close to showing them what he could do now. "These aren't just any ordinary chess pieces. They were created by some Ajuka guy to fix the underpopulation of the underworld." He picked up the queen. "They are called Evil Pieces and they allow anyone to be reborn as a devil and each piece have a purpose. The king is gone because it's inside of me now."
"Sire I wish you had contacted me before you agreed to something so dangerous." Ashiya looked concerned.
"Well, it wasn't something I could refuse." Sadao nervously rubbed his head. "Technically this town belongs to his family and another and with all of our crazy adventures well… but, look here, I don't need to conserve my magic anymore." Sadao transforms back and forth with ease to show them.
"Amazing sire so does that mean we can finally go home?!" Ashiya looked rejuvenated.
"Finally I can get out of these stuffy clothes!" Lucifer threw off his blazer.
"Well…" Sadao slumps down. "Not exactly."
(Flashback)
"And with that, you are now the king in the service of the house of Gremory." Sirzechs smiled. Sadao looked himself over but nothing seemed to be different.
"Are you sure? I don't look or feel different." Sadao wondered.
"Of course, the piece won't change your appearance other than devil wings." Sirzech gestures and Grayfia unfurled a pair of thin bat wings. "Devils draw their power from themselves, from what you said you drew it from the air around you so I can understand your confusion."
"Myself?" Sadao looked in on himself and saw a flickering flame grow larger. He held out his hand and pulled a piece of the flame from the rapidly growing flame and thought about a small fireball. His magic circle appeared and the fireball slammed into the wall burning a curtain. "That's so cool! Oh shit! I'm sorry! I'll pay you back somehow."
"Now, now if we got angry over every time a deal destroyed something with their new power my sister would be grounded till the end of time. It's quite common for someone who isn't used to devil magic to cause some damage though you did pick it up quite quickly. But to be able to open a hole to another world you must be quite proficient with magic." Sirzech laughed.
"I wouldn't say I'm a slouch but some of my generals were far better when it came to magic." Sadao enjoyed the praise. "I wonder if I could open a portal now?"
"Why don't you try? I'd be delighted to see another world." Sirzech's eyes shined with anticipation.
"I guess I could try," Sadao nodded. He ran through the chant in his head and bringing his hand down in a slicing motion he pulled from that fire again and a tear appeared. It was off, normally it was a swirling vertex not a full-on tear and nothing looked similar. In fact, what he saw felt cold and sent a shiver down his spine. His eyes widened as he saw the largest dragon ever turn and fly his way opening his maw to show flames gathering. Sadao lost concentration and the spell faded.
"The dimensional gap? Are you sure you did it correctly?" Sirzechs asked.
(Flashback end)
"So the spell changed when you gained this new magic. How odd." Ashiya mused.
"So we're back to square one. That's fun. So what do you plan to do with those pieces." Lucifer asked.
"Well, I figured if we can't open a way home we could always stay here and join their Devils. Their leaders are chosen by those with enough power and influence." Saido grinned twirling the queen around his fingers. "It also helps that these Devils don't suffer from needing negativity to substance them, and as they aren't in a war like us it feels perfect for a new start."
"But what about your people and kingdom sire?" Ashiya wondered.
"Their still there. And it's not like I've stopped caring. We climb the ranks in this society amass resources and an army of far stronger forces and return of course." Sadao's ears perked up as he heard the hallway door open and a pair of footsteps came their way.
"~Of course~! You are so wise my lord so what do these pieces do?" Ashiya praised him.
"Well as it was explained to me each piece has a different rating and ability." Sadao picked up a pawn. "A single pawn is one point and the queen is nine points. Pawns have the ability to promote into a Queen, Rook, Knight, or Bishop in enemy territory or by the king's order and they gain the strengths and weaknesses of the said piece." He went on to explain how each piece worked, such as the knight's speed but low defense, rooks enhanced strength and defense but low speed, bishops enhanced magic abilities but weakness to up close attacks, and the queen having a balance of rooks, knights, and bishops.
"So what pieces are we getting sire?" Ashiya asked. Sadao thought as each of them possessed a mix of abilities, He decided to do as Sizech suggested and poured his power into each piece allowing the piece to choose the person. Both of his bishops flew towards the two generals.
"Well that makes sense for Urushihara no offense but you were never really a front lines kind of fighter." Sadao picked up the bishop that went to Ashiya. "I wonder if there's more to the pieces, I heard it took all of Sirzechs sister's pawns to reincarnate one person. Maybe a person has a predetermined piece? Though with all of your combat experience just think of the surprised look on an enemy's face when a bishop punches their lights out."
"Heh, this works for me. So what now?" Lucifer asks.
"Well if both of you accept the pieces then all we have to do is a small chant and then boom you'll be reincarnated as a devil." Sadao waits and they both nod. The light of the ritual was bright enough to be seen from the outside. Both Generals stumbled but found their footing and stood up straight. "Well, then two bishops down thirteen more pieces to go. You two can come in now I know you've been listening in." As the door handle opened the queen flung itself towards the visitors. Maou looked at who caught it and smiled.
"So what do ya say? Want to be my queen?"
AN: Who caught the queen? How will Rias and Sona take the news of a new king in Kuoh?
