Devil+Demon+Human = Power

Romonus did not know what to expect, but this reminded him just how powerful a god of Rahvdall's status was. From what he got out of that exchange, he managed to kill Dante of all people with only a wounded eye after being punished for his descent.

That brought out a whole nother can of worms he did not want to open because if a 'weak' god-like Rahvdall managed to do that while wounded, what did that mean for the true Power Houses? 

'I'd rather not think about it.' 

When Romonus drank down the red and black glowing blood he was instantly overwhelmed. The children of Sparda, Dante in particular were beyond powerful Demon Human hybrids. Cambions, just like his soul. 

His own Devil bloodline was honestly a joke in comparison to something like this, but it was the perfect catalyst. Romonus instantly sat down as he felt his Demonic Energy begin to bubble and writhe in his body. 

Dante, Virgil, and their Father Sparda all controlled massive quantities of Demonic Power which was much stronger than his own. It was a good thing he was nearing the Satan Rank as this was ridiculous. 

His Energy reserves began rising rapidly, but this also caused millions of his cells to die one by one. The power inside Sparda's Bloodline was far too much especially since he believed this was Sin Devil Trigger Dante. 

He calmed his mind as he began circulating his Touki through his body circulating his Life Force. Doing so gave his cells the time to fuse with the Demon bloodline. Thankfully he already had a Cambion soul. 

Thanks to having that this Blood Essence did not find his body alien. He felt his cells stop dying rapidly and instead by the millions they mutated and evolved by absorbing the perfect fusion of Demon and Human. 

While humans were considered weak beings, it was because Dante and Virgil were hybrids that they were so powerful. Romonus grit his teeth as the energy in his body started to become painful to contain. 

It was like an ever-growing flood and it was only thanks to him being a Devil with a body as strong as this. He would have exploded if he was any softer, but even his dense bones and muscles were starting to tear at the seams. 

Already the skin around his body was starting to rip as he fought to keep it all contained. If he had vented some of it this would have been easier, but he was unwilling to lose a drop. 

Instead of worrying or panicking, he just calmly circulated his Touki, Soul Energy, or Demonic Energy at the same time. For a few tense moments, the rapidly growing and evolving Demonic Energies seemed to be about to explode taking him and the entire Gremory Domain with it. 

But at the last possible second, the Blood Essence settled down and began to fuse into his entire body. Cell by Cell they combined with the Blood Essence which granted him the needed Healing Factor of Dante. 

All over his body the damage he had been inflicting on him by containing this ocean of Energy regenerated. Romonus stood up and felt his Demonic Energy, and Touki begin to flow through his entire body on their own. 

His soul thanks to the human blood he had evolved while keeping its hybrid nature. Romonus took a deep breath as he felt all of the Blood Essence fully settle down and fuse into his body. 

'Finally, and thank you for your unwilling sacrifice, Dante.' 

He did feel a little bad, but since he had not been the one to kill the guy it was not a hit on his conscience. However, now that everything had settled down he was feeling limitless energy and strength flowing through his body. 

Before as a regular Devil, he was insanely strong, able to dodge lightning strikes, lift insane levels of weight, and more durable than any human could imagine. He had enough power to level Cities with ease, but this was on another level. 

"Can't call myself a Devil now, can I? Sparda was a Demon, and Dante was a true Cambion, a Half Demon. Super Devil sounds dumb, so I will just call myself a Demon. A Satan Class Demon." 

It was up to him now to draw out the full power of his new Demon bloodline as just consuming it won't give him the power overnight. However, this certainly made his plans easier because he was going to need this power. 

Mundus the Demon King, and Argosax were the closest thing he could compare to the Evie Atolde. Both Demons ruled the Underworld which in the Devil May Cry verse was Infinite in scale. Mundus even created Nightmare, a being who could destroy that infinite Underworld. 

He clenched his fist feeling that this was going to be the last gift he received. It would take time for him to draw out power from the Demon blood flowing through his body, but he had time. 

He held his hand out and pulled Blood Drinker into his hand. 

'Vespera, you up?'

'How could I not be? What did you do to get this instant jump in power?'

'I will tell you in time. For now, we need to begin to plan to get you out of Blood Driner. What will you need?' 

Vespera thought about it before she came up with something. 

'Not much, a Devil or Vampire body would be preferable for me to possess. As long as you give me enough of your blood I should be able to begin to turn it into a vessel to recover my body. Because may I remind you, most of my body was rendered down to make Blood Drinker. Why?'

'Because I want to use Blood Drinker as material, to forge a new sword. As you know, I have always planned to invade the Vampire realm to get a Longinous user and a future Longinous user. While we are there, let's find some Noble to use. 

That be the best bet right?' 

'It will, and since you are my distant relative, your blood will work even more. Especially after whatever the fuck you just did. Even the sheer power of your Demonic Energy is overwhelming. I might be able to use it to weaken these binds to make your work easier.' 

'How long will you need?' 

'Don't know, a couple months, maybe a year.' 

'Alright then.' 

Once they cut the link, Romonus kept Blood Drinker by his side as he officially no longer needed sleep. His constant Regeneration thanks to his Demon blood had effectively made his stamina near infinite. 

Meaning, he could use all 24 hours in a day. Instead of wasting the night sleeping, it was time to train more. For the next couple of hours in the night, he merely focused on stabilizing his body which he did so with Touki training.

His Life Force was overflowing right now thanks to his new Demon bloodline. Though, he might as well call it a Cambion Devil bloodline since that was what made it up. 

For the next 8 hours, he stayed still as a statue only circulating his Demonic Energy and Touki to stabilize his power. Now that he had reached beyond the level of the original Satans, he was in a much better spot politically. 

Normally he was not one to hide his power, but sometimes it was better to play it off. He would hide his new Satan Class rank for a while before unleashing it when needed. The young lion had just gotten a new set of weapons. 

---

In the morning a small delegation sent from House Bael had arrived at the Gremory Mansion. They had done so quickly as they wanted to get this done right away. At the time Zeoticus was in his office as he had not slept a wink that night. 

He kept Marcina by his side as he did not blame her for what happened. Just himself because Venelana would not have cared as much if not for how he neglected her. Zeoticus was twirling Venelana's wedding ring in his hand, but he had another ring in the same one. 

It was a Spatial Ring which he had gotten for his son, a going away gift. He had gone through the Gremory Treasury and gotten what his son asked for. He even managed to get not just Minokawa Feathers, but even a Thunderbird claw, and a preserved Heart from a Steel Dragon hunted long ago by the Gremory Clan. 

Marcina with her bulging belly stood up and wrapped his arms around him. 

"Do you hate me now?" 

Zeoticus sighed. 

"No, just myself. You won't replace her, nothing will." 

"I don't want to replace her, I wronged both of you." 

Zeoticus did not find comfort in her words. 

"Lies. I was the one who agreed to your request, the child growing in your womb is mine. A part of me and I am responsible for his existence. Just know that I will treasure him just as I have any of my other children. Maybe more now that both my sons have left the nest." 

Sirzechs who was the heir became Lucifer, and Romonus became the Bael heir, leaving Rias as the new heir. While she was training now because of her older brothers, she could not compare to either of his sons. 

They would have led the Gremory Clan to greatness. While he did not think she couldn't do the same, the evidence spoke louder than words. Just then, a blonde maid with a similar body to Marcina entered. 

"Sir, the Bael delegation is here." 

"Ah, Axina, how many?" 

"Only 12. They were here to move Romonus' and his room." 

This was a request that Romonus had made, he had made his room just how he liked it. He enchanted it himself and he wanted it to go with him. This was quite easy as they were going to cut out the room and plug it into the Bael Formations which was going to be quite easy. 

Marcina let go of Zeoticus who stood up. 

"Let's go see the delegation then." 

---

Romonus opened his eyes and exhaled strongly as he felt no damage in his body. Physical or spiritual and he could feel the Bael servants arrive. He stood up and since he was already dressed in his Hunter suit he was ready. 

He lowered the amount of power he outwardly released making him seem like a peak Ultimate Class Devil. He strapped Blood Drinker to his side and walked out of his room. He had to wake up Itsuki and Akeno who liked to sleep in a little more. When he reached their rooms he banged on their doors loudly. 

Both girls woke up instantly as he often did this. If they did not get up, and dressed in 3 minutes they would be forced to train double. He crossed his arms and waited for the two girls who quickly got out of their rooms. 

Since he liked it so much he had made both girls wear his Bloodborne Victorian suits. They were light, and comfy, while still offering ample protection. They also looked awesome which was secondary, but important. 

"Good, you both got ready quickly. How are the suits?" 

Itsuki looked at herself a bit before jumping in place a bit before going down into a push-up.

"It's comfy, and I can move easily in this. Though, why pants?" 

He rolled his eyes as he pointed at Itsuki. 

"Hold your leg out?" 

"Ok." 

She instantly did what he said with her leg extended. He reached up grabbed her leg and lifted her off the ground. She did not panic and seemed to find this fun being upside down. While holding her up with one arm he looked down at her face. 

"If you were wearing a skirt, your panties would be visible to everyone. Akeno, imagine it. You are fighting and your skirt snags and it is ripped off."

Akeno blushed at the thought. He tossed Itsuki up in the air which she loved. When she landed back down he caught her on his shoulder before asking the question. 

"So, would you rather I change you from wearing pants to skirts?" 

Both girls shook their heads making him smile. 

"Good, we don't need any lucky pervert moments. Oh, and before I forget how are the boots." 

Still sitting on his shoulder Itsuki held her feet out to look at the black boots she was wearing. 

"They are nice. Pretty too." 

Akeno looked at her own feet where she also wore a pair of black boots like Romonus. 

"They don't hurt or anything and I can run in them easy." 

"Good. We can get some made later for now these made of Demonic Energy will suffice." 

As he was walking he grabbed Akeno by her coat and tossed her in the air as well to catch her on his shoulder. 

"Up you go." 

Akeno blushed a little much less forward than Itsuki who always was the outgoing type. 

"Uh, Romonus. Can you put me down? It's high up here?" 

"Nah, you're going to stay up there while I talk to the Bael people. They will know you are important to me. When we move to the Bael Castle, tell me if anyone throws a sly remark, insults you, or anything of the sort. 

I will sort them out and tell my Mother as well. We are going to be surrounded by a den of lions so we need to be lions as well. Clear?" 

Itsuki nodded with a firm look on her face. 

"YES SIR!" 

Akeno closed her eyes and saluted. 

"Uh, YES SIR!"

"I CAN'T HEAR YOU!" 

Both Itsuki and Akeno yelled with all their hearts. 

"SIR YES SIR!" 

Rias popped around the corner with a frown. 

"Stop yelling." 

Romonus walked over to Rias with both girls still on his shoulders. 

"Rias, I didn't expect you to wake up early?" 

She yawned as she looked up at him. 

"I have to, now that I am the heir because you and big brother got higher positions. You better visit every day got it." 

"I will try. I don't plan to stay in the Bael mansion forever as I got things to do." 

She tilted her head. 

"What things?" 

"Complete my peerage. I have a few people in mind, but I got to find them first." 

Rias looked up at him. 

"And me?"

Romonus thought about it. 

"I got one person in mind for you, but you better get stronger. How many pieces use to turn someone strong depends on how strong you are. Right girls?" 

Itsuki grinned. 

"I took 4."

Akeno pointed at herself. 

"I took a Bishop." 

Rias got determined. 

"I got it. Take care brother don't let them turn you ok?" 

"I won't." 

Itsuki and Akeno jumped off his shoulders as he and Rias shared a hug. They released the hug we Romonus saw his Father Zeoticus leading the Bael servants down the hall. 

While they were servants each one dressed in fancy robes and looked rather cold. When they spotted him they walked over to his side. 

"Young Master Romonus, we are here to help you move. Which is the room in question?" 

Romonus pointed at his room. 

"This room, ensure everything attached to it including the bath, and extra rooms are added. I will probably ask for an extension once I get to the Bael Castle."

The one at the head of the other 12 nodded. 

"This is acceptable. Castle Bael is spacious and adding more room to yours will be alright. Let us begin and not delay." 

With Zeoticus' permission, they accessed the wards of the Mansion to begin to cut the sections Romonus pointed out. Once they had it cut, they would use magic to measure and transport it to Castle Bael. 

Once they had it measured they would open up an area of equal size in the Castle before plugging it into the formations of the Bael clan. This would take a while so Romonus turned to his Father. 

"I guess this is it."

Zeoticus nodded. 

"I had great hopes that you and your brother would lead us to greatness son. However, you have a duty to the Underworld and our people more than a single clan. Just don't forget your home?" 

"I won't Father." 

Zeoticus walked forward and hugged his son. 

"Look after your Mother." 

Once they separated he placed the two rings into his hand. Romonus looked at both rings. 

"I got what you asked and more. It wasn't cheap, but the Gremory are rich. Be the best King you can son." 

Father and Son shook hands before Zeoticus left with Rias. Only now did he realize the error of his ways the error of staying weak. As he and Rias walked he looked down at his daughter. 

"Rias, would you mind if this old man joined you in your training?" 

"You dad?" 

He nodded. 

"Yes, as shameful as it is to admit, I am weak. Weak compared to other Lords and I get told I should be proud of my sons. No one tells them to be proud of me, they just attribute them to your Mother's power. No more." 

Rias smiled and held his hand. 

"Of course Dad, brother said anyone can train to improve." 

"Let's prove his words shall we." 

Rias had so much more to prove if she wanted to measure up to her brothers, and Mother, but she was determined. She still remembered what Romonus told her, that he was waiting for her. She did not want to be weak and she would fight for him and their future.