"I'll start with the basic Devil magic system that is followed in most realities," Rias said. "It is entirely reliant on noble Devil houses such as the Gremory or Phenex clans. The house crests that we invoke to cast magic circles act as a medium and allow the users to tap into the respective family's collective…Magical Authority, you could say. It doesn't have any official name since it is a very abstract concept stemming from before even the original four Satans were in power. All that is left after invoking familial Magical Authority through the respective crests is to articulate our instructions clearly in magic circles and expend the necessary amount of Demonic energy to facilitate the spell."
[That's the basic gist of your crest-based magic. Any chance you know how things work behind the scenes? With Magical Authority, that is.]
"I'm getting to it," Rias said. "That is how most of the supernatural world functions, not just the Devils. Tapping into a greater source of authority through crests to achieve what is collectively known as magic. The Angels, Fallen Angels, Norse, Yokai, everyone… Of course, some of their methods are closer to the things that happen behind those crests than others."
[Like the Norse… You mentioned that before.]
"Yes. The runes they use to articulate instructions are very close to natural runes that magic works on behind the scenes. The crests of every faction are powered by the Magical Authority that each respective faction holds. The reason that this Magical Authority doesn't have any official name is that it stems from a different authority, and both are considered roughly the same."
[Are you talking about Territorial Authority?]
"Precisely," she nodded. "This is where the concept of Territorial Authority comes into play. Each faction's crest is linked directly to the territory that it governs on Earth—specifically, on Earth. External dimensions like the Underworld, Heaven, etc., don't count. Here, factors such as size of the territory, prosperity, population, happiness index, and more also come into play, impacting the capabilities of these crests."
[Wait, you said that this Territorial Authority thing worked to empower people… now you're telling me that it also allows the whole crest system to work.]
"That's because Territorial Authority has two different aspects," she said. "One is this passive aspect that allows crests to function through what I'm calling Magical Authority. You can think of it as the collective quality factor of the Territorial Authority stemming from any territory. The second aspect has to do with an active output that stems from that quality factor, providing an empowerment boon that can be applied to anyone."
[Sounds convoluted…]
"It is, I agree," she said. "But that's because the alternative is far more difficult for the average creature to learn. Without this crest system, the number of entities able to access magic would be a tiny fraction of the usual number, regardless of their racial talents. Because the alternative relies on the willpower of an individual."
[That makes sense, I guess…]
"The reason these crests rely on Territorial Authority is that it provides a certain level of control over reality, enabling so-called magic, which is just the crests exercising their control over reality as per the magic circle's instructions. Does any of that make sense?"
[Sort of. It feels like a very roundabout method with all sorts of loopholes to exploit for people in control…]
"That's likely by design. To make sure no one ever gets too strong," she said. "On a lower level, it makes stray Devils unable to use magic circles, leaving them helpless in front of officials who can cast magic freely. On a higher level, entire rebellions can be quelled simply by disabling the central crests, stripping magic away from entire factions without so much as an ounce of resistance."
[I guess. I'm assuming that the truly strong ones with actual authority are strong even without relying on these crests.]
"Naturally," she nodded. "Beings like my elder brother, Michael, Odin, they all have innate abilities like the Power of Destruction and enough willpower to bend reality to their will without the need for external support. Of course, they wouldn't say no to having concentrated Territorial Authority as support for the sake of convenience and a power boost."
[So, how does one actually cast magic? Beyond relying on crests. Imposing your will on reality sounds cool and all, but how do we achieve that?]
"First, we'll start with something simpler. Learn to harness your Demonic energy with absolute control," she said. "How much do you have right now?"
Magic Capacity: 50/50 (Human)
[About half as much as what you currently have. Quantity-wise. I can't tell the difference between different qualities yet.]
"That's all? I thought after going so far with those two, your capacity and abilities would have grown significantly," she said.
[I mostly prioritized diverting whatever magical energy the two released to you. Even if I doubled or quadrupled my capacity, it wouldn't make a difference in front of a being like Ophis.]
"I agree," she nodded. "First, tell me this. Do you have Demonic energy or a different kind of energy? It came to you after I absorbed my counterpart, that's why I'm doubtful."
[No, it's different. I can convert my energy into Demonic energy with a thought to supplement you, but its current form is different.]
"Can you show me? Maybe we'll be able to gauge the difference between our qualities with that as well."
Orion transferred five units of magical energy from his reservoir into Rias as it automatically got converted to match her Demonic energy, adding a single unit of energy to her pool, taking it from seventy-five to seventy-six.
[Five to one… Not bad, I think.]
"The quality difference?" She asked, sensing a faint addition to her pool of energy.
[Yeah. Your reserve increased by a fifth of what I provided you.]
"Huh, better than what I had expected," she showed an impressed expression. "But I wanted you to show me your energy. Seeing your ability to easily convert it, I believe it might just be raw mana. That's what the Norse Pantheon uses instead of derived versions like Demonic or Holy energy that is skewed toward certain types of magic."
Orion nodded and released a single unit of his energy into Rias' body instead of sending it into her core, where it would have been automatically converted into Demonic Energy.
"Ahm…" A loud moan escaped her lips, and she shivered, curling up as she floated in her spot. "W-what the hell, Orion?"
[All I did was to send my energy into your body directly to prevent it from being converted.]
"F-fuck…" She took a deep breath as Orion observed her body's current state of high arousal and sensitivity.
[Damn, this was the one thing I didn't try with those two… If I knew direct ingestion of my energy had such an effect, we might even have been done a day earlier.]
"P-pull it back, damnit…" She brought her hand between her legs and clasped it over her already moist entrance, resisting her instinct to touch herself.
[I can't. Honest. It's already dissolved into your blood.]
Rias bit her lower lip with a tantalizing expression, tightening her core to suppress her arousal. "If this is some scheme of yours, Orion…"
[I could send a lot more energy than that into your body, Rias. Why would I need to play around like this? I didn't expect this to happen, obviously.]
"Fuck you!" She shouted, though it felt more like a tantalizing moan as Orion observed her facial expressions and read her lips.
[Okay, that was uncalled for. Just let the arousal run its course; it should normalize in a few minutes.]
She was practically panting with each deep breath to calm her raging arousal. Orion didn't say anything, sitting back and enjoying the way his unprecedentedly beautiful host dealt with the arousal while trying her best to keep her dignity, while completely failing to hide her body's natural responses.
[You know, Rias… An orgasm will probably solve all of your problems. How about I help you out with that? As a bonus, you will be completely regenerated to your peak state after that.]
"No…" She gritted her teeth, unwilling to step back.
[All right. It was just an offer, no need to get your panties in a twist… That is, if you were wearing any. Do you still doubt that I will be with you while you cross realities?]
"Just… no…" She mumbled between deep breaths that made her chest rise and fall tantalizingly. Unfortunately, the arousal only continued to intensify, with no signs of abating, no matter how much she suppressed her instincts.
I really should have tried to send my energy into Irina and Xenovia… It would have been far easier to toy with them if I had support from this little side effect.
[All right, cards on the table. Where is this resistance coming from? Do you believe that I will ever allow you to find another man for yourself? I may be a slime, but I like my humanoid form very much. To the point that I have a dark, possessive desire to completely own you. You can resist as much as you want, but unlike the women that I left behind in that reality, leaving you behind is physically impossible for me. If you understood even a part of this monologue, let me help you. We can take things as slow as you want. No need to jump ahead if that concerns you. You'll only hurt yourself if you keep trying to suppress this…]
"You won't…give up…will you?" She asked between emphatic pants, her stubborn desire to resist Orion's advances weakening as her fingers started moving involuntarily along her entrance.
[It has nothing to do with giving up or not. This arousal is clearly magically induced, which makes it highly likely that it isn't going away any time soon.]
"Fine… I haven't fallen to the point of touching myself in front of another man. Just my breasts, though, nothing more," she said, shooting him a vulnerable, albeit aroused look. "If you don't listen to me, I will completely stop talking to you for at least a year and destroy your physical form every time I see you. Even if that leads to my death…"
[Noted…] Orion chuckled, immediately taking up his human form and hugging Rias from behind.
She let out a loud hiss as she both shivered and stiffened completely the moment his arms wrapped around her naked body. Orion, keeping his word, brought his hands up and cupped her breasts, immediately eliciting a sexy moan from her lips as she practically melted in his arms, losing all of her previous stiffness.
[Stop touching yourself.] While the words echoed through her mind, she felt Orion's breath directly on her ear, sending a shiver down her spine. [If you disobey, I will tie your hands behind your back.]
"Don't even think about it, you pervert," she growled at him through her moans as he continued simply squeezing her breasts, constantly changing the force he used. Though without him having to prompt her again, she moved her hands away and placed them on her sides, tightly pressing her palms flat against her sides.
[I'm looking forward to the day you let me have full access to your body. The first thing I'm going to do is to eat you out until you can't think of anything other than my tongue. I wonder how Devil pussy tastes, especially that of a horny virgin like you.]
"That's your fault," she mumbled weakly, biting her lower lip to suppress her moan. "How was I supposed to know your magic is an aphrodisiac?"
Orion didn't tease her any further and focused on toying with her tits. With her stubborn pride, if he teased her too much, she might do something drastic.
Hugging her from behind, he freely mauled her extra sensitized breasts for more than two minutes, constantly sending pleasurable jolts throughout her body by perfectly reading her responses and squeezing her breasts in the most pleasurable way possible before even bringing his focus to her erect pink nipples that seemed to be dying for him to pinch and twist them.
As he grasped her nipples, a loud moan escaped Rias, her suppression failing as she pushed her chest out toward his hands and pushed her hips back, swaying them as if grinding against him.
[I really want to get rid of my trousers right now…] Orion's whisper sent another jolting shiver through her, but before she could reply, his grip over her nipples tightened, and he squeezed her breasts.
"Fuck~!" She moaned loudly, without any sounds actually escaping her shivering body in the vacuum of nothingness. "More~," she gasped. "Please~!"
Orion could tell she was close and deliberately allowed her to intimately feel his erection—still covered—as she pushed her ass back and swayed her hips along his hidden shaft. He brought his focus back to her tits once again and squeezed them, pinching her nipples at the same time.
With a perfectly accurate reading of her body, he knew exactly how close to an orgasm she was and continued his rhythmic actions for another minute, consistently squeezing her breasts and tightening his hold over her nipples, occasionally flicking the sensitive nubs with his thumbs. Once she had started moaning, she didn't bother to stop, freely letting out throaty moans that, while inaudible, perfectly expressed her feelings. As he felt her reaching her peak, he roughly squeezed her tits and pinched her nipples a final time before twisting the sensitive nubs, immediately eliciting a loud moan from her as her entire body started convulsing.
At the same time, the effects of Tantric's Recovery effect brought her to her full, available, peak of ten thousand units of magical energy.
He loosened his grip as his actions quickly grew gentler, letting her slowly ride through the intense and rough orgasm.
[Are Devil women all squirters, or are you and Akeno special?] He asked with a whisper, gently licking her ear. [So sensitive that it barely took me any effort to make you cum just by teasing your breasts…]
"S-stop…" She mumbled, shivering as he continued teasing her. "No more…"
***
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