Demon's Virtue

774  Arcane Magic

Eiro stretched slightly. Being this far away from the manor right now wasn't particularly great for his body. His body was at about 70% of the integrity it should be at right now. Which was pretty good when you considered that usually by now this body would be a puddle on the ground, but it was to the point where it was pretty damn uncomfortable to deal with. Then again, the pain from his body falling apart over the couple of days before Eiro entered his coccoon was incomparably worse.

Currently, the demon was at the academy. For the past few weeks, he has had a replacement filling in for him and relaying the tasks and homework that he wanted to give to each of his students. It did mean that the students that he was particularly paying attention to were a bit left behind, since Eiro couldn't tell his replacement teacher about every single thing he was taking care of, but even so, they were still supported alongside all the other students in Eiro's classes, so at least they didn't completely lose out.

He stepped into the lecture hall, and the students immediately perked up seeing that it was Eiro instead of the substitute that has been teaching them for the past little while.

"Lord Daemonherz!"

"You're back, where have you been?"

"Are you alright? I heard you were sick!"

Eiro laughed slightly as he stepped in front of the blackboard, "Now, now, calm down, everyone. I was not sick, rather, I was engaged quite deeply in some training and recovery following a rather large recent accomplishment. Actually, there will be an announcement about it in just a couple of days."

The students immediately started muttering amongst themselves, trying to figure out what Eiro had managed to do. Of course, none of them were even close to figuring it out. Some were not totally wrong, guessing that Eiro had developed a new spell, which he had. But that wasn't the accomplishment Eiro was talking about and decided on using as an excuse together with Solomon. The 'accomplishment' that Eiro was talking about was that he killed the Devil.

There were a few matters that Solomon had to take care of before actually announcing this considering the severity of this information. Since Eiro had officially taken out multiple Royal monsters at this point, it was clear that there was a lot of attention on him. Other countries would want him, or maybe even take him out. Eiro had seen a few annoying bugs buzzing around the manor, but him, Partax, and Shimour had worked together to create a barrier that made it impossible for anyone to even really see the building, not to mention all the weird stuff that was going on around or inside there. Since they weren't any threat just yet, and only there to watch Eiro and what he was up to, he didn't take any of them down yet to avoid antagonising the countries they came from, but it was still pretty damn annoying.

"As I said, you will have to wait until the end of the week for the announcement to come out. I sadly can't tell you anything myself right now. However, I can show you something else," the demon explained. He had asked Solomon about what he was about to do beforehand, and according to him, Eiro was allowed to show off any of his research as long as the themes of that research weren't confidential. And all of his magic and spell research was something he was allowed to show off whenever he wanted. And since this was a 'theory of magic' class, he figued this was one of the best places to show off this new spell of his. Honestly, he was just a bit excited and felt like showing it off to people, especially his students, "Everyone, please make sure to pay attention to what I'm about to do."

The demon cleared his throat, and started speaking the chant. This was a slightly less compressed version of the chant to give the students a better shot at actually learning something from it, though it was obviously still slim to none that they would understand any of this without explicit guidance. However, to make sure that the students could gain some insight and understanding from the magic circle, Eiro was specifically constructing one around him for this purpose, though this duplicate's magic circuits would already allow him to just use this spell without it.

A moment later, Eiro 'blinked' to the back of the lecture hall. The students looked forward confused. A few of them seemed to think that he used some sort of illusion or invisiblity spell, but once Eiro started walking down the steps from the back of the room back to the front, a few started to realize what was going on.

"The 'Blink' spell is an application of arcane magic as a base that is infused with concepts relating to spatial magic," Eiro started, "It takes the target body, the starting location, and the destination as its main inputs. Its main process first breaks apart the target body at the starting location, envelops the particles of that target body in a protective layer of arcane magic, transports those particles to the destination, and then puts it back together based on the base information that was gathered beforehand. This process is run independently for every single particle simultaneously, whereas each section of arcane magic does the computation similarly indepentently, controlled by the main processing loop that is contained within the magic circle."

The students immediately started taking notes based on what Eiro was saying, as the demon flicked his wrist and used the chalk in the front of the room to sketch an explanation on the blackboard, "Can anyone here tell me what basic spell this process reminds you of? There are a few, but I am thinking of one in particular."

The room was silent for a few moments, the only sound coming from the scribbling of pens that were still trying to finish their notes. But then, a student raised their hand, and Eiro nodded at them.

"Is it... 'Arrow Volley'?" they asked, and Eiro quickly nodded his head.

"Correct, that is indeed the spell that I was thinking of. The 'Arrow Volley' spell is one of the overlapping elemental spells, as many of these standard, basic spells are these days. The element can be swapped out in many of them, and the spell can otherwise function without any other major changes. However, there is one difference in the Arrow Volley spell. Other projectile spells require an angle and force input that needs to be calculated, and while the Arrow Volley spell does that too, it is a bit different. It practically shoots a 'guiding' bolt first, and then the location where that bolt hits is registered as a location that all other arrows are aimed at. Basically, you have the target body, which would be the element, and the starting location, as well as the destination," Eiro explained, noting down the similarities between the spells.

Of course, the 'blink' spell was many, many times more complex, but it was true that a very important centrla part took some inspiration from spells similar to the 'Arrow Volley' spell. A main difference was just that there was no guiding bolt that was shot out, and the destination coordinates had to be set manually during the construction of the spell. The students still followed along curiously as Eiro continued to explain the intricacies of this spell. And of course, there was a question that came up surprisingly late.

"How do we cast Arcane spells?" one of them asked. Of course, arcane magic was a concept that didn't have a lot of research behind it. There weren't that many people that even knew the principles behind it, let alone that were actually capable of using it. Since Merlin was a professor at this academy in the past, this place actually had some of the best information about it so far, but even so, it looked like Merlin never taught much about it.

"Arcane magic is a special sort. It's practically 'non elemental' magic, using a transformed, 'pure' mana. Basically... imagine taking the purest mana you can imagine, and infusing it with the element of 'Magic'. It's hard to control, since you need to draw your own essence away from it to create arcane magic in the first place, and you need to have an extremely high understanding of magic to even make use of it in a way that is worth it. But once you get to that point, arcane magic can do many, many things that other magic can't. And well, I think it's about time that I pass that magic on to you all," Eiro said with a smile on his face, "From now on, I will be instructing you all on arcane magic."

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