Several months had passed since Rias showcased her sharingan to her mother and brother. The Crimson-haired Ruin Princess is now 11 years old. Surprisingly the potential engagement to Riser Phenex had yet to come up. She suspects that it may come up sometime within the next year or so due to Lord Phenex recently wanting to meet her father.
She has no intention of stopping the contract signing of the engagement from taking place since she has a plan involving the Phenex clan. Even without a rating game as a loophole for her to get out of the engagement, she can force the issue by pressuring her overwhelming power onto the Phenex clan if it comes down to it. Rewriting memories also works, there's several ways to get out of the engagement if necessary.
Currently, she's floating above the Naberius clan's territory. Wearing a cute black dress with black shoes. Today is the day she's finally going to take her first action in gathering a powerful peerage. It's also the day where she's finally going to start making some real big moves ever since being reincarnated in this universe. Evolving and helping her family become stronger doesn't count in her mind.
"Erasing the entire Naberius clan would be so easy, too bad most members are actually innocent with no knowledge of Super Devil experiments going on. Hmmm between the main and branch families, it's best to leave at least the head of the Naberius clan's main family alive. Big bro Sirzechs and the other Satans can deal with him once I give them the evidence. Guess the branch family head is the unlucky one between the two." Rias said to herself.
With her being demonic power completely suppressed to where she can't be sensed and her body invisible to the naked eye. Rias first made her way to where the head of the Naberius branch family resides.
According to Ciel, her first target is in his bedroom alone.
Once outside the room, Rias made sure to surround the room in a near invisible anti-magic/demonic power barrier that also blocks all sound from escaping outside the room.
Sure, it's a bit overboard but she doesn't feel like giving him the slightest possibility of escaping or alerting others of her presence.
Teleporting into the bedroom, Rias made herself visible. Her sudden appearance shocked the Naberius Devil, who had been going over some reports.
"W-Who are you?! How dare you infiltrate this territory?!" He shouted at Rias.
"Me? Oh nobody important, just a random Devil." Rias shrugged while smirking.
"Random? Don't fuck with me!" The head of the Naberius branch family tried to summon his demonic power. His mind also briefly wondered why none of the maids, butlers or guards hadn't already come to check on the situation.
His angered expression suddenly changed to a shocked one as he realized he could not access his demonic power for some reason. Dread and fear began to fill his body, turning his stomach.
"What's wrong? Where's that hostility you displayed seconds ago?" Rias mocked him, sensing his emotions.
"Y-You! Wait! That…crimson hair…you're the Gremory heiress!" The Naberius Devil suddenly realized.
"No shit and you're a soon to be dead fool who had been overseeing experiments on Devils and Youkai in hopes of creating Super Devils. The Four Satans banned Super Devil experimentation for a reason." Rias shook her head, watching the scared Naberius shake in fear. Honestly she's quite surprised he hasn't tried to at least run.
'You finished with his memories Ciel?' She asked her partner.
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'As reliable as always, Ciel.' Rias praised.
The Gremory heiress killed the head of the Naberius branch family by using Gluttony. Unfortunately for the Naberius devil, because Rias also consumed his soul he has no chance at reincarnation unless Rias herself decided to revive him.
But why would she waste the effort on reviving trash?
"Now that this is done, the whole situation with Kuroka can be avoided." Rias nodded to herself.
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"Well…it would be so simple to kill them, but from what I know all of his peerage members were forcefully experimented on. He even went as far as to experiment on the family members of his peerage. If this situation is similar to how it is in the original light novel, then Shirone shouldn't have been considered an option yet." Rias stated.
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"That's good to know. I guess I'll just put them into an unconscious state then put them in my stomach. Later I'll hand them off to my brother, he can probably use them as victims in the Devil Council in order to punish the Naberius clan. Possibly the Nebiros Clan as well, seeing as their former head of the clan Zaorama Nebiros, is the root to this whole fiasco. Ciel, make sure to rewrite the memories of every member of the Naberius household after I destroy their research facility. Make them believe that an accident took place, killing everyone inside the facility." Rias did not want any member of the Naberius to think they were attacked. Nor did she want them to attempt to search for Shirone and Kuroka.
<
"Interesting, now this is a significant difference. I'm sure I'll come across more of them sooner or later." The Princess of Gremory grinned, highly curious as to the other significant differences she'll discover.
After quickly searching the entire room for anything else that could be used as physical evidence. Rias canceled her barrier and teleported to the research facility to rescue and recruit the Nekoshou sisters.