Otto pov-
Muahahahah!
Their expression is priceless!
I didn't think Grayfia would reveal it tough, especially this early.
Yes just like you heard, Rita is the elder sister of Rias and little sister to Sirzechs.
I bet you're wondering how I got my hands on her.
I did say that I found her from some slaver and that she had no family, that part is right but it goes much deeper than that.
Rita was born into the Gremory household two years before Rias was born by Venelana and Zeoticus.
Of course, they were happy and shit about her being born, especially Sirzechs.
But there was one thing about Rita when she was born.
She had little to no Demonic power.
Zeoticus being the prick that he was, wanted to dispose of her immediately. He didn't want her talentless presence to lower their house's prestige.
He also wanted to do it in secret as their house is known for being one of the kindest of all devils, if the public found out that they disposed of their blood because of having little to no Demonic power-their reputation would plummet.
Well at least he tried to, Venelana protected Rita.
Zeoticus could have killed Rita either way but that would mean facing the wrath of Venelana.
So he made a deal in which Venelana would have Rita be taken care of in a separate estate, far away from the Gremory land, and live in secret.
Sirzechs at the time also agreed to his condition. Despite being Rita's older brother he was The Satan first.
Fucking coward couldn't even protect his own little sister.
All to keep peace in the underworld he didn't abuse his power as Satan. That is also the reason why Rias is still stuck in this arranged marriage with Riser.
*Cough*
Anyways, they did as they were told and she was raised in that house for two years which was run by maids. Venelana and Sirzechs would also occasionally come and visit.
But one day everything changed, Rias was born.
From the day she was birthed, she was hailed as the new heir of the Gremory.
Sirzechs, Venelana, Grayfia, and even Zeoticus loved her as they saw her as the future of the Gremory.
Completely forgetting about Rita
After that, the info I got from Isaiah went dark, the only clue was that she disappeared along with a maid.
The trail picked up again with her suddenly appearing in an orphanage and later kidnapped and saved by me.
Well, there you have it folks, a classic Forgotten family member's plot.
The forgotten princess of the Gremory.
When I found her she still had that pitiful amount of demonic energy so I had Gasper use his [Corruption] to create a virus that would evolve and perfect her body, giving her body a better connection with her soul-Boosting her Demonic energy and unlocking her power of Destruction
As I mentioned earlier the connection of the soul and body along with the quality of the body plays a big part in how much Mana or Demonic Energy you are born with, that's why I had [Gasper] modify her body.
---
3rd Pov
"Don't call me by that name, I am Rita Rossweisse. The name bestowed upon me by my master" Rita corrected Grayfia, Rita's face scrunched into a frown as she heard that name she hated so much.
Grayfia flinched from Rita's harsh but well-deserved words. Grayfia could still remember the day Rita was born, despite not having any demonic power she still cared deeply about her. In fact, she was the person who visited Rita the most when she was banished from the household besides Venelana.
But despite that...she forgot about her.
She won't deny it, she did forget about Rita when RIas was born along with almost everyone.
But she was still family, she was there for her first words, her first steps.
But despite that, she felt regret.
Regret of forgetting her and losing her so many years ago without them noticing.
"R-Rita"
"Dont speak my name" Said Rita with venom obviously lacing her tone.
Grayfia wanted to say something but she couldn't bring herself to do it, after all, she didn't deserve to do so after what she did.
suddenly Grayfia's eyes landed on Otto, her so-called master.
rafia narrowed her eyes, full of killing intent.
first, they met by chance in Europe, then he came here by chance from Germany. And now he has Rita-princess of the gremory, as his maid. And incredibly loyal at that.
Otto didn't flinch a bit at Grayfia's killing intent, one of the special rings he has protects him from mental attacks and he's also trained resistance towards it with Azza's help. to him, it was a walk in the park.
"fufu~ don't look at me with those eyes, Grayfia. After all, if you Gremory didn't want her to begin with then what's to stop me from having her~" Said Otto in a cheery tone.
'He knows' thought Grayfia.
information about Rita was a deeply hidden secret by the Gremory, so his knowing means that he really is more than what meets the eye. it also means that either they have a spy in the Gremory or he's really good at concealing himself as the Gremory mansion has a high-class magic barrier that should have warned them about him.
Grayfia decided to go with the second option as she couldn't feel any sort of mana from him, it felt like if she took her eyes off him for a second he would disappear from her eyes.
"How about we talk about this later, we still have the Fried Chicken in the room" Said Otto. it wasn't good to have a person like him listening to their conversation.
Grayfia and especially Rias had more questions but they reluctantly nodded as they both knew that this was sensitive Gremeory business, not Phenex.
"Fried Chicken? lowly human!" Riser was about to summon a fireball once again to incinerate him but he stopped as he saw Rita taking out her scythe.
He may not fear the human Otto but he sure as hell is scared of Rita.
"Alright, how about we calm down, let's all take a seat and talk~" Proposed Otto.
Everyone agreed and after a few minutes, everyone was having a drink quietly.
"the tea made by Rias's queen is superb" Compliment Riser, although I'm sure nobody wanted it.
"Thank you very much"
Akeno gave a bow and a fake smile, it seemed forced.
Riser was sitting on the sofa right in front of where Rias, Koneko, Akeno, and Kiba were sitting.
Otto sat on his own chair that Rita had brought out for him, Rita standing right behind him.
"Riser I've told you before, I will not be marrying you!" Rias brought attention back to the original topic.
"Are you really in a position to be selfish Rias? Can you really afford to do this while the Gremory family is the one struggling? It's your family that benefits the most here, not mine. And considering that the Gremory has only been able to create 3 possible heirs, well 4 with HER it seems, while the other clans have way more new blood"
Ever since the great war between devils, fallen angels, and heaven, the population of devils has significantly dropped. And this has caused concern among the people, especially nobles, who treasure lineage above all. The Gremory so far has only been able to produce Sirzechs, Rias, and Millicas, not including Rita as she ain't affiliated with the Gremory anymore.
Rias faced Riser with a determined expression "I am not going to bring my family down. I will find a husband but I refuse to marry someone I do not like!"
Her statement irritated Riser as he stood up and walked towards Rias.
"Our fathers arranged this marriage for the greater good for not only the phenex and the gremory clan but devilkind as a whole. You know Rias, I am the face of the Phenex, I cannot have you sully Risers honor like this" Riser reached out and grasped her chin.
"Sorry but she ain't marrying you" Otto suddenly chimed In to the conversation as he sipped his tea(has alcohol in it)
"Imputant Human! I let you off the first time but Riser will not let you sully his honor. I don't care if that maid of your's is in the way" Flames burst out of his body as they began to make the room hotter.
"Wait, listen to my proposition first"
"Proposition?" Riser asked as his Fames toned down. Definitely because he was kind enough to listen to the human, not because the demo- maid behind him began to take out her scythe.
"Yes a proposition, let's have a Rating Game. I win and you and Rias will break off your engagement"
Silence filled the room as everybody was to stunned to speak, even Grayfia was surprised by Otto's sudden proposal.
She was already going to propose a raring game but it was going to be between Rias and Riser.
"Ha...hahahhaha you punny human really think you can fight Riser? What does Riser even get out of this?" Riser asked in a mocking manner.
Otto took another sip of his tea as he calmly looked at the hysterically laughing Riser "Well let me tell you something. Rias might own Issei's Soul but...I own his sacred gear~" Otto raised his hands as a blue chain appeared out of nowhere. Everyone's eyes went wide in surprise.
They looked at the chain and looked where it lead...to
It went straight to Issei's chest. Connected not his soul, but to his sacred gear. The chain was proof of the contract Otto and Issei made when Issei had sold him his sacred gear all those years ago.
All for this moment
"Hahahaha!!! This is my offer Riser! Win and you shall have the boosted gear. I'll rip it out of Issei's Soul and give it to you. And you won't get in trouble as it isn't the Gremorys' property"
The room was to stunned to speak.
Even Kiba was surprised by the suddenly change of events. It was as if Otto had planned everything in advance...of course he did.
"What?!, I don't remember selling it to you!" Yelled Issei as he came out of his stupor
"Of course you don't" a crimson feather suddenly dropped from our of nowhere and into Issei's hand, retuning the memories of all this years ago.
'All according to Keikaku' Tought Otto as he saw the blanked out Issei who was having his memory returned by a Fenghuang Down Feather