I really can't resist writing my newest idea. I resisted the last 3 or 4 ideas I got like a Gundam Seed Destiny x Ultraman crossover but there's no way I can resist this. After all that, how can I resist writing about Solomon? Besides, with devils as main theme in DxD, we all want to see how the King of Magic deal with them, right? Okay, so again, I'm only setting up base for now so bear with me if I don't update this as often. I do want to finish my 13 Longinus first and then there is Angel's Blessing and the others.

Disclaimer: I do not own Fate Grand Order or DxD.

Chapter 1: Return of Solomon

ARS NOVA

Romani Archman, no, the true Solomon unleashed his first Noble Phantasm, returning his ten rings to heaven thus erasing the 72 Demon Gods and weakening Goetia significantly. But with this last act, he had also doomed himself to be erased from the Throne of Heroes, no, from existence itself.

But he does not regret it. If it means the continued survival of humanity, of the friends he made during his time as Romani Archman, then he would gladly do so. Solomon, the King of Magic, disappear from the world with a smile.

…

…

…

"Solomon…"

King Solomon open his eyes and realized he is not gone. He is floating in a place that can only be described as 'the void' as he can see nothing but darkness all around him. But that's strange. He knew for a fact that unleashing Ars Nova should've annihilated him but here he is right now still in the form of the person known as Solomon. Or is this how disappearing from existence works? Even with his wisdom, he knows nothing about disappearing into the infinite void.

"Solomon…"

There was that voice again, calling his name. It took Solomon a few seconds but he finally regains his bearing. Dying is certainly different this time around. Last time he died peacefully after all. He could feel pain all over his body. Not surprising as he's supposedly annihilated from existence. But since he has a 'self' here and he is perfectly aware, then does that mean he still exists?

"I see you have awakened, Solomon."

As the throbbing headache subsided, Solomon can finally hear the voice clearly and can't help but feel surprised. He had heard that voice once a long time ago, so long ago that it felt like a a mere dream of an age long past. Three thousand years ago to be precise, back when he was still alive as the third King of Israel.

"Lord, you saved me."

It has been so long but Solomon can never forget the voice of God even if thousands of years and more than one lifetime had passed. As long as he is Solomon, he will never forget that voice.

"Indeed it is I, my child. I have seen what you have done and again, I am proud of you."

Solomon felt warmth overcome him.

"I am only doing what I feel is right."

"Just like all those years ago when you choose wisdom over treasure and power. But I am sorry my child, I brought you here because again I am in need of you."

Figures he is needed for something. But at this point, anything is better than disappearing from existence and a request from God is something he would not think twice about doing. He is Solomon, the King of Israel, the King of Magic, and most of all… a Chosen of God. And God had saved him from disappearing.

"What is thy bidding, oh Lord. I am your humble servant. Your will is my command."

"Very well. Listen Solomon, for I have grave news. In another reality, a part of me was killed physically in a war thousands of years ago against Devils and Fallens of that world. This was all because that 'Me' sealed the beast of apocalypse and was severely weakened. After 'My' physical body was killed, that part of 'Me' rejoined me and it is that part of me is worried that what He left was not enough to face the coming threat."

Solomon understands. So God has a part of him physically manifesting in another world and He was killed in a war due to being severely weakened after sealing the apocalyptic beast. Now He is worried about that particular world and Solomon can already see where this is going.

"Solomon, this one last duty is something I trust only you to fulfill. Save that world and then you may live the rest of your life in peace. Carve yourself a new legend, and become the hero we all know you are."

Solomon silently nodded. He could feel a floor forming under him and he now stood up straight as gravity returns. But there is one thing he needed to ask before he left for his last task.

"Lord, can my magecraft and Noble Phantasm work in another world? I believe that the world you are sending me works with a different set of rules and I fear that I might be useless if my body is not compatible with the kind of power that world works under."

"Do not fret my child. You will retain all your power as a Heroic Spirit as I extracted you from the Throne before you could disappear. You will arrive there as a living Heroic Spirit and you will be able to utilize that world's magic. As my parting gift to you, I return to you your Rings. But it is different for it has no more connection to your Demon Gods. Instead your Rings are now connected to the Devils of that world. What power it holds now, you will find out soon, just as you always have. And remember my child that you will never be alone."

With God's declaration, Solomon felt the familiar weight of his ten Rings in each of his fingers. It appears similar like his old ones but he can feel that they are also different at the same time. With this, he is ready. Giving one last deep bow, the King of Magic left towards the light and to his new life.

-Kuoh academy-

Solomon, or now known by his alternate ego, Dr. Romani Archman, or more well known as Roman, sighs as he found the three familiar faces entering the infirmary looking like they've been mauled by bears, or rather, beaten up by kendo club girls. He gestured at the bed and the infamous group of students known as the perverted trio sat there like usual as he start their usual treatment.

"It's the twelfth time this week that I have to treat you boys. Can't you guys cut down on the peeping? I can't treat you every four hours, I have other things to take care of."

Roman scolded them. He has been in the school for only one month but he had treated the boys every single day ever since he got to know them, which is quite quick since they're frequently sent to the infirmary for being beaten up after peeping on girls, particularly the kendo club.

"Geez, how can you be a harem king if you act like this? Girls will be more inclined to beat you rather than date you."

Out of the trio, the one called Hyoudou Issei genuinely look down in shame when he said that. But it is not because he regret being a pervert, no. But it's because he wants to be a harem king yet he also knew that his perverted act is stopping him from taking the first step to fulfill that dream.

Roman has no real problem with a young student dreaming to become a harem king. He would actually help him in any way he can. If he condone Issei's dream, he would be a hypocrite. After all, he has 700 wives and 300 concubines during his life as King. Girls, his sole weakness during his life. Thankfully he doesn't chase skirts around anymore. That would be disastrous in this day and age… not like he would care though. He is Solomon the wise so he could figure something out.

And to be serious, he doesn't really care if Issei and his friends go peeking on girls. That's how his father met his mother after all. It would actually be funny if one of the girls actually fell for any of the three after being peeked enough though he seriously doubted that but hey, it is funny. But he is a school nurse now and a well respected doctor back in Chaldea. He must act as a responsible adult and admonish them.

"You guys better stop peeking, at least for a while if I can't convince you to stop permanently. If I catch you guys being sent here for that again, I'll make sure the three of you won't recover for a week."

He glared at them and the three students nervously nodded.

"""We understand sensei."""

"Good. Now you guys can go home."

He make a gesture of shooing them away and again sighs when the trio exited the infirmary. He grabbed his mug and took a sip as he look out the window. It has been a month since he arrived in this world and he had spread his familiar all over the world to gather information. Without gaia resisting magecraft in this world. He doesn't need to worry about upkeep to keep them existing. Not like he would have any trouble being a living Heroic Spirit and all.

He decided to stay in japan and build his base of operation here in Kuoh. It's actually for sentimental reasons more than anything else. Fujimaru Ritsuka, his friend and Chaldea's only active master is Japanese and the Holy Grail War he fought in was in Fuyuki, Japan. As for why he settled down in Kuoh, he originally want to settle in Fuyuki but that town doesn't exist and Kuoh is close to where it would be on the map and when he passed by, he felt the presence of a number of devils so he decided to watch them for now.

Who knew that devils in this world looks like normal highschool students. That's a real novelty. And it's a great coincidence that the school that they attend is in need of a school nurse. He got to use that doctorate degree again and to be honest, he loves being Romani Archman.

Roman put his coffee back on the table when he saw something that caught his attention and it is not something that he like. A fallen angel had just approached Hyoudou Issei. To think that a fallen angel is actually right there in front of the school gate, what the hell are the devils doing? With a wave of his hand, Roman made a familiar in the form of a dove to follow them. He need to know what the fallen angel want with Issei though he already got a clue on what it could be.

Hyoudou Issei, he had been observing him for a while… which is very easy considering that he came to the infirmary on a daily basis what with being beaten up by the kendo girls. God gave him information much the same way as the Holy Grail did when he came to this world. It is just a summary of the Great War, the current condition of the supernatural world, and the most important thing of all, Sacred Gears.

Sacred Gears, they are like Noble Phantasm with unique powers given to humans. But perhaps because God physically died before it could be completed that it shows several anomalies that God wouldn't have meant to make for them like how Sacred Gears can be obtained by half bloods. It was meant specifically for humans after all.

On that note, his Rings seem to work as a sort of sacred gear though calling it a sacred gear would be… not quite right. It is exclusively made for him and it will pass on along with him. It's still a Noble Phantasm that belongs to him but it works differently from his old Rings. It has some rather amusing effects.

Then Roman got a report from his familiar. It seems that Issei will be having a date with the fallen angel. Is this a honey trap? Most likely. But she might be genuine. For now though, he would observe and if the fallen try to do anything… well, he'll have to show them why it's bad to mess with someone under the watch of the King of Magic.

It turns out that the fallen did want something and that is his sacred gear, or to be precise, eliminating him before his sacred gear activated. A rather reasonable move although done with little caution there are lots of ways it can go wrong. He was already at the scene that night so he quickly moved the moment he realize her intention. But he's too late. By the moment he arrived, Issei had been stabbed by the fallen angel.

"Tch, I'm too late. No, I can still save him!"

Solomon snap his finger and the fallen angel instantly combusted. Ignoring the burning fallen angel, Solomon focuses on trying to save Issei. He had put on a bounded field that separates the area from the world at large, preventing anyone from coming in or going out or even noticing a whole area missing from the world. He examines Issei and quickly work to save him.

As he works, he found out why Issei's being targeted. His sacred gear is not an ordinary sacred gear. Out of the various types of sacred gears, there is one class that is special compared to the other. That class is called Longinus, sacred gears with power so great they could theoretically kill gods if used correctly. But after examining Issei's sacred gear, he knows that it is no theory. It is the real deal. This type of sacred gear is truly that powerful in the correct bearer. For instance, if used by Arturia Pendragon, Issei's Longinus could allow her to really reach the realm of the gods and kill one. Give one to him and… let's just say blowing up a planet is not so hard.

"If I only heal him right now…"

Solomon began to consider his options. Issei and his sacred gear will definitely be targeted if other people knew about him. Just healing him won't solve the fundamental problem, just giving him more time to live and he will eventually find himself in similar situation and perhaps at that time, Solomon won't be nearby to help him. Issei will need power, enough power for him to start off on his harsh path, enough power to fend off for himself.

And Solomon is capable of giving him that power.

But he hesitates. The power of his Rings is permanent and one-time use only. He cannot take the power he grants unless he unleashes Ars Nova once again. Is this the right choice? The fate of the world is at stake. If he gives Issei power then he will also in turn give him a fate worse than running away from the supernatural. But…

"…if you want someone to blame, then blame me, Issei."

Having made his decision, Solomon unleashes the first power of his Rings. One of his Ring glows and from it a beam of light pierces Issei's heart. As Solomon begin his resurrection ritual, a word form on the Ring he's using to resurrect Issei.

Hod

Evil Pieces, Solomon frowned as he, in his true form, dissected the item piece by piece. He got one from eliminating a stray devil. Extracting that item while pinning down a small-time stray devil is not a terribly difficult thing to do for a Heroic Spirit of his caliber.

Distaste is apparent when you look at his face as he analyzes the chess piece. To increase their population number since devils have a hard time reproducing. He could accept that, but slavery? His people had suffered for that before the exodus and he certainly doesn't like it either even if there is a merit system. This is literally selling your soul to the devil.

There are some people he had identified as 'reincarnated devils'. He had not moved against this abomination for one reason and they are that reason. Some of them are content and genuinely like their new life. Who is he to deny them that choice? It's not like the devils in Kuoh treated their subordinate badly.

For now he shall wait and see. He has other things to do anyway, like summoning his own allies. After all, if he's going to fight a Beast in the future, he will need all the help he can get. Issei is still asleep. The resurrection and his modification will take a while. He had hypnotized Issei's parents, making them think that he's staying with Matsuda and Motohama and he also hypnotized the other members of the perverted trio. It will take a few days until his resurrection is finished.

Four magic circles are drawn on the floor. It took a while but he managed to finish it. He had to thank God for this help he's been given.

His ten Rings do not serve only as amplification item and weapon but as a connection to the Throne of Heroes and summoning device. But instead of summoning his 72 Demon Gods, he could summon Heroic Spirits to help him on his quest. Of course, he cannot choose the class or the Hero he will summon but he doesn't care about that. The Ring's power will provide them a living body instead of a spiritual container. But if a Servant dies, he cannot summon a replacement this time. His Ring's summoning capability will disappear entirely so it's a one-time use but that's not something he's worried about.

This capability is paired with the ability to gift the same kind of body and power to someone from this world, making them a pseudo-heroic spirit. That ability is what he used on Hyoudou Issei. Speaking of the boy, he should wake up the moment he finished summoning his friends. His plan is to use summon 5 times and gift 5 times, making an equal number of heroic spirits and pseudo-heroic spirits.

"Perfect."

As he waited for the clock to strike twelve, Solomon gather his prana. When the clock does strike twelve, he began to chant. No, it's not a chant, it's not an Aria for a major spell but it is more of a wish, a pleading.

"Ohh Throne of Heroes, please hear my calling.

The time of Birth had come

I am one who begins all

By my name Solomon I announce

Your self is under me

My fate is in your sword

If you would stand by my cause then answer

Here is my oath

I shall attain all virtues of all Heaven

I shall have dominion over all evils of all Hell

From the Seventh Heaven attended to by three great words of power

Descend from the Throne, protector of the holy balance!"

All four circles let out a blinding burst of light as power filled all of them. Solomon stood on watch as the light slowly began to die down and four familiar figures appear from the magic circle. Four of his rings now have engravings on them. Malkuth, Keter, Chokmah, Hesed. Four more Emanations had been filled.

Seeing their familiar visage once again, Solomon can't help but smile.

"It's nice to meet you all again, my friends."

And there it is. I rushed the first arc by making Solomon basically ignore everything after Issei was turned to devil. Well, he has things to do and Issei is Rias' responsibility after she turned her. At least he tried to save him. But this is just the beginning. Solomon is preparing his forces.

So how did I do? I honestly got this idea just today and it's a spur-of-the-moment thing. Solomon's version of summoning and his limits since there are no Holy Grail around (if you don't count Sepiroth Graal). Next chapter is where things will get hectic... and I don't know when I'll update.

Updated on 22/03