The Knight of Ruin(DxD)

After leaving her castle, Romonus and Serafall did not have to teleport or fly to reach the restaurant in question. It was a 5 minute walk from her castle which she rarely got to do before she got her computer. 

The bureaucracy of the Devil Counsil and Great King Faction was to keep the Satans occupied instead of at their throats. Because if Sirzechs, Ajuka, Serafall, and Falbium decided to not play nice they would in theory take full control over Devils. 

At least those that survived the Second Civil War which was why they played along. They did not care about a ruling or anything of the sort they just wanted to be with their loved ones and keep to their hobbies. 

In her case dress up like a Magical Girl which Romonus brought up. 

"When did you get into your magical girl fascination? The 80s?"

She rubbed the back of her head with a smile. 

"'90s, I was in Japan at the time meeting with the Shinto gods because we wanted to have territory in Japan. Amaterasu agreed to let us take partial ownership over Kuoh, as long as we followed some ground rules. No mass killing, keeping things down low, and not drawing attention to ourselves. 

During the meetings, I saw the first Magical Girl Milky Spiral anime and I was enthralled. Is that weird?" 

He shook his head as they had already reached the restaurant. 

"No. I like anime too, but I just prefer fantasy anime rather than that." 

Serafall smiled. 

"Cool. Want to watch it with me someday?" 

"Sure, I can give it a shot. Mind showing me how you transform?" 

He might as well have told her to show him her life which caused her face to beam with a smile so dazzling his heart skipped a beat. Serafall began to spin around and with glittery magical girl effects changed her outfit into her Magical Girl Milky Spiral Seven cosplay with the staff and everything. 

She winked at him and spun around. 

"Sparkles shine your command is mine." 

His eyes were drawn to her bouncing boobs before he looked away as if he was not Issei. He was not going to oggle her to death though he did remember it. He started to clap with a smile on his face. 

"You are the cutest Satan." 

Serafall frowned as she leaned on him pressing her soft back against his body. 

"That's not a contest Romonus. Falbium is old and bald, Ajuka is a big frowny boy, and your brother Sirzechs is a big sibling con. He always brags about you and Rias saying how proud he is to be your big brother. He carries pictures of you two around and brags about you two to The old Devil counsel. 

Even those old fools who have been alive since Devils were created have lost patience with him. Come on, don't get another compliment for me? Maybe something hotter?" 

He got bold as he knew a girl like Serafall probably heard all this before. He reached down and wrapped his arms around her bare waist before pulling her in. Her face began to heat up as he hugged her tight. 

"You are without question the cutest, most fun Devil Serafall Leviathan."

She smiled as she looked up at his handsome face. 

"You're quite bold Romonus. Do you want me for your harem? You just got engaged and you're after my pure maiden heart too? What will Latia say?"

He leaned down and rested his chin on the top of her hat. 

"I asked her before trying my luck, she is ok with it. And you know what I told her? If I want someone for my harem it is because they passed the criteria."

She reached up behind her and ran a hand down his cheek. 

"Are you 11? You're making my heart skip a beat."

He smiled as he released her. 

"Come on then, we can talk more over a meal. As for my maturity, when you're a Noble, you're forced to mature quickly to deal with all the schemes." 

She smiled sadly as they walked into the restaurant. 

"That is true, just know that you got good points for all your words. Keep that up and you just might win my heart over." 

"Count on it, my Lady." 

When they entered the restaurant, they paid for two for the Buffet option. The girl at the register almost passed out when she saw not just the famous Gremory Heir, but Serfall Leviathan on a date. At their restaurant which was not fancy for Nobles. 

It was more in use for Reincarnated Devils as this was more of a human term so most Nobles would be caught dead before they entered here. As for Romonus he did not care about Nobility and Serafall was open to try anything. 

So once they were given a table, they both got to pick out the foods they wanted which was a mix of Chinese, Mexican, and Italian in a good mix. Once they were seated and they started eating Romonus looked across from him as Serafall ate. 

Each time she tried a new dish her face beamed in a happy smile. 

"How did you find out about this place and why have I never heard of it?" 

He stuck a fork in a crab cake and brought it up to his mouth. 

"I have been training at my brother's castle since I was 5 years old when his peerage began to train me. Surtr Second would take me out to have ice cream or eat at new restaurants opening up. This one opened up 5 years ago and the food is excellent. 

As for how you never heard of it, do you have time to explore the city?" 

Serafall sighed. 

"True. Before I got my computer I would spend hours with more and more paperwork. Now, I get my work done leagues faster than before. It freed up a big chunk of my day." 

"I am glad it did because then I can see more of your pretty face when you eat." 

She reached up and held her cheeks. 

"Awww, you're so sweet. Am I really that cute? What do you like about me?" 

"Your long raven hair, your sparkling pink eyes, your bubbly face, and your personality too. You also are a power house with authority to your name. When other pantheons think of the name Leviathan, who do they imagine?" 

She leaned forward and rested her chin on her palms.

"Me?" 

He nodded. 

"Lady Serafall Leviathan, stronger than the original Levithan on the merit of her efforts. Just having that makes you an outlier among our race. That is most important to me, a drive to improve."

Serafall looked at her plate before looking up at him. 

"You know, for that, I will give you a shot. I have had many suitors who were after my looks, my authority, my body, or my status, but to you, they are just something that defines me. I like that."

He reached out across the table and held her hands. 

"How does it feel that an 11-year-old is better than any of your previous suitors?" 

She smiled playfully as she squeezed his hands gently. 

"Better? Maybe?" 

"Haha, let's enjoy our meal as I am sure you will have more work soon." 

She nodded as they went back to enjoying their meal, however, Romonus realized he was being followed. He looked up from his food and looked out the window of the restaurant. In the window of the restaurant, Mirria was glaring right at him.

Serafall was going to look at what he did, but he raised a hand and blocked her view. 

"Uhhh, it's nothing. Just a window cleaner." 

"Oh." 

By that point, Mirria was gone making Romonus gulp. He may now have a stalker which he did not expect. 

'Did I go too far? Nah.' 

When they finished eating, Serafall returned to her castle while Romonus teleported back to the Gremory household. He was quite happy that Serafall Leviathan was open to his advances as he really liked her. 

Despite her age she acted more like a child than he did which was saying a lot. When he returned to the Mansion, he appeared directly in his room. Once he was here, he waved his hands and his suit flew off his body before falling into place over a mannequin. 

His battle suit flowed over his body once more as he now wanted to test something. He walked over to his door and locked it before sitting down on his bed. Romonus looked over at his right hand where he had his Spatial Ring. 

He brought out the Demonic Sword Blood Drinker. Even while in its sheath he could feel the spirit of the sword hungering for blood. He slowly drew it out of its sheath and looked at the master-crafted Demon Sword. 

It was many times larger than regular longswords as it was bordering on becoming a greatsword while remaining a longsword. He placed the sword on his lap and began to circulate his Demonic Energy through the blade. 

He closed his eyes as his Touki of Life Force hummed to life at the same time as he reached out to the blade. The story his Uncle told him was that the Vampire who had their soul and body rendered down to create this had wronged the Bael Clan. 

What that meant he did not know which was bad enough that the Bael Clan went after a Vampire Noble. They must have been a powerful Noble because the aura this sword was giving off was off the charts. 

As he did this, he began to feel Blood Drinker call out to him. The Spirit of the blade knew he was a worthy wielder feeling the power he drew. But now that he had Touki unlocked, he could feel Life Force in the blade. 

Either from the process it was made, all the blood it fed on, or the vampire was still alive. He did not know, but as he continued to reach the spirit of the Sword he fell into the trance. He appeared in a realm of pure darkness which he assumed to be the soul of the sword. 

He looked across from him and saw a female in chains. Each chain ended in a spike that stabbed into her body in brutal ways with Devil runes of binding covering each one. As for the vampire herself she looked young, 20s, with soft features. 

(Image here)

Blood constantly leaked from her wounds so he walked forward until he was in front of her. She looked down at him with heterochromatic eyes. One was blood red and the other a familiar purple, though she also had a pair of wings and horns. 

"You are not pure blood, you're a Vampire Devil hybrid." 

She slacked in the chains before launching out trying to bite his throat out. Instead, he grabbed her chin with one hand and leaned in to look her in the eyes with his own.

"Here is how it will work. You will make a contract with me. In exchange for me feeding you the blood of my enemies, you will not drain my lifespan or plot against my well-being. If you refuse this contract, I will simply render you down for scrap metal. Your choice love?" 

She snarled before yelling out at the world. 

"DAMN YOU ZEKKRAM BAEL! YOU AND ALL OF YOUR DESCENDANTS LIVE TO MAKE ME SUFFER! FINE! I AGREE!"

Using his Devil powers he formed the contract as she had been starved of blood for centuries. Her suffering was eternal and unless she was fed blood often the pain these demonic chains and runes inflicted on her was maddening. 

But they also protected her mind from breaking making it a never ending hell. Tears began to spill from her eyes as she looked at the ground. 

"Please, free me. I don't want to suffer anymore."

At that moment the runes began to glow before he fired pure Demonic Energy through her body which was her soul. Her screams filled the realm, but Romonus simply crossed his arms as she squirmed in pain. 

When the torture ended she fell slack feeling dead, but she was healed by the same things that tormented her. 

"What did you do to piss off the Bael Clan anyway and what is your name?"

She looked up into his eyes showing the pain and madness in her eyes. 

"I am Vespera Carmilla Bael and I killed my Father, Zekkram Bael's grandson for the rape of my Mother. As punishment, Zekkram Bael himself hunted me down and had me turned into this damn Sword. And you?" 

"I am Romonus B. Gremory, your distant relative. If what you say is true, your suffering might come to an end. If you are truthful to me that is. Until then, I will get you the blood you need Vespera." 

She fell slack once again and he returned to his body. 

'She didn't lie.' 

Nothing she said was a lie as their souls at been in contact. He felt the pain and the truth of her words. He raised Blood Drinker and looked into the screaming face on the crossguard. He leaned forward and rested his forehead against the blade. 

"Don't worry Vespera, I promise the day you walk free again will come. Just give me time." 

The blade did not respond, but he could swear that the presence seemed to calm. For now, he pulled a vial of his blood from his ring. He poured it along the blade and watched as his blood was drawn into the metal. 

Instantly through the contract he made with Vespera, he could sense her pain lesson. He would need to supply her with constant blood until he could free her because she did not deserve such a fate. He may not be a good guy, but this was beyond him. 

'Zekkram Bael is a true Devil to do this to his Great Granddaughter, but he is the first Devil made so he must be the closet to a Demon.'

With a shake of the head Romonus placed Blood Drinker back in it's sheath and kept it at his side.