Hey… uh… sorry… I don't have a very good grasp on time, please don't kill me. Here's a new chapter?

Two months later, age of twins five.

Rin narrowed his eyes, focusing on the egg he held. Shiro sat with his legs crossed in front of him, leaning back against his dragons silvery scales. As he watched his adopted son, his magic made his irises seem to swirl around the pupils. Shiro gently instructed his son, "Now Rin, gently toss the egg up, and catch it with your other hand."

Rin flicked his wrist, and the egg smashed on the ceiling far above his head. Rin growled before grabbing another egg. "Don't worry, it takes time to learn to feel the flow of mana through your body. You have far more than many I teach Rin, you can do so much good, but only once you learn control."

Rin ignored his father, focusing on the egg before nodding. Shiro sighed and rehearsed like he had done thousands of times before. "Focus, feel the breath in your lungs, feel the air as it flows in and out of your lungs. Feel your heartbeat, pushing the blood through your veins. Know the strength in your body, and the strength of your bones. Hear the sounds of the world, and watch as nature and fate progress as the gods intended. Note the small bits of magic in day to day life, the easily missed, try to feel the mana of the world, and of my own. Then look within, and feel the mana in your own body, watch as it flows out through your body, along with you blood, and remember, the mana is yours, and only yours."

Rin's eyes became a few shades lighter, and his pupils become slightly jagged on the edges. "Feel the mana rise and fall, seeking to equalize all over your body, then will it to gather all in one place. Pull all your mana in, to a single spot, pull it all to your heart, hold it there, hold, hold, now Rin, gently toss the egg up and catch it with your other hand."

Rin flicked his wrist, and the egg left his hand, going up, rising higher and higher, to the top of Sylvia's snout, before it began its journey back down. Shiro smiled and he watched in pride as the egg landed safely in Rin's hand. There was a beat of silence, then all at once, all the dragons in the room raised their heads to the sky and roared in triumph, pride, and joy, that the one they have watched grow finally triumphed over adversity, while said child cheered and jumped in joy.

Once everyone calmed down Shiro stepped forward and ruffled his son's head as he smiled proudly, "See, I told you that you'd get it. Now that you can feel your mana we can work on more interesting things. From working on strengthening your magic, to Mana Skin, to how we can make use of your particular magic abilities."

Rin grinned at his father, "Does that mean I can learn how to cook now?"

Shiro chuckled, "A deal's a deal, we will start with some easier things, and I will be supervising, understood?"

Rin nodded happily, "Okay." He ran over to Sylvia, bouncing in place as the paladin shook his head with a smile. "Did you see Sylvia? Did you? Did you?"

The silver spirit dragon bent her head down to look Rin in the eyes, "Yes little one, I saw. Very well done, Shiro doesn't say it enough, but both of you boys are making incredible progress, I've seen the classes he taught in their first year, and plenty took even longer to feel the flow of mana. Especially from what I heard about those with warrior magic like you."

Rin smiled at his twin, who was doing sit ups. "I did it Yukio, I finally did it."

Yukio stopped and turned to his brother pushing up his glasses with a smile, "Yes, I know. Kinda hard not to when I heard all the dragons roar."

Rin gave a nervous laugh before he jumped up and landed lightly on Sylvia's head. She blew some air in amusement looking at Shiro who just rolled his eyes and turned to the door, "Looks like I'm cooking supper again after all…"

Rin and Yukio both got up quickly and shouted "NO!" before running after their father.

After supper

"That was seriously salty Rin, take it easy next time." Shiro said as they walked out to the dragon pens. Shiro made a mischievous expression, "We will use the eggsercise a few more times to make sure you got control of your mana down before we start working the two of you on Mana Skin."

Both boys groaned at the pun. "Yukio continue your exercises while I finish helping Rin with his control."

The boys head inside and Yukio closed his eyes for a moment before he dropped down and started to do push ups. Shiro sets down a carton of eighteen eggs. "Ok Rin, it'll be a bit different this time around, since you've done it once, I'm going to have you practice it without me telling you how to tune yourself in. You have to learn how to do it yourself, and since you have the feel of it now, I'm positive you will catch at least one of these eggs."

Rin bit his lip nervously before he closed his eyes for several moments, and when he opened them they were the color of his flames, with jagged pupils he threw the egg… and it grazes the ceiling before breaking in his hand. Rin growls but Shiro starts clapping with a smile, "Well done, well done indeed. I thought for sure you'd break another four eggs, but I underestimated you." Rin's eyes brightened as he turned back to the carton grabbing another egg. He closed his eyes once more, focusing, and opened them, tossing the egg up, up, up, before catching it in his other hand. Shiro and Sylvia squawk in shocked unison, before staring at each other then Rin, and back again. "Rin…" the dragon starts hesitantly, "let's see if you can do it three times in a row."

Rin looked at the pair confused before shrugging, "Okay." He closed his eyes for a moment, and tossed the egg from one hand to the other, and does it again without pause. Shiro sat down heavily, "That… That's insane. I knew you had a lot of potential, the both of you, but this… this is just… wow."

Rin and Yukio look at each other confused before looking at their father. "Why do you say that Dad?" Yukio asked.

Father Fujimoto looked up at his sons, "I don't really teach this sort of things to those with Warrior magic. Yukio is about average in control over his magic for castor type mages. Castor's have the most control over their magic, warriors the least control. And Rin… once he got the feel of how it feels to control his mana he progressed insanely fast, even for castors, it took him longer to figure out but once he did it once, he only needed two eggs to get the point he can withdraw his magic if need be. Normally it takes at least a couple days to get to that point after they get it the first time with help."

Shiro shook his head, "Anyway, could you go get Seishiro? We will need his help to teach you Mana Skin." The boys quickly ran out the door to find him, leaving Shiro behind.

Rin made it to the monastery first before calling out to his brother, "I'll check upstairs!" Yukio walked in as his brother raced up the stairs and started wandering around the ground floor of the monastery, then he caught movement out of the corner of his eye, looking outside the window he saw small black shapes, and jumped. He raced to the window and looked on with wide eyes. Seishiro and Rin walked down the stairs and saw him before walking over.

"So," Seishiro began, "You can see them?" Yukio looks up at Seishiro, before looking back outside and nodding. "Those are Coal Tars. A fairly weak breed of demon, they tend to possess dust dirt and fungi, nothing to be concerned about. Think of them like bees, if you don't bother them, they won't bother you."

Yukio nodded and the three made their way outside. Yukio flinched away from the coal tars at first. When they entered the dragon stables again Yukio relaxed, and Seishiro asked, "So, Yukio can now see demons, and what's this about Mana Skin?"

Shiro smiled reassuringly at the younger boy. "They are ready to learn how to use it, Rin finally got the hang of pulling back his magic. Mind summoning something to practice with."

Seishiro rolled his eyes before waving a hand and a five foot cube of steel manifests in the middle of the room. He then walked over to sit down beside the paladin. Shiro then called to his twin sons, "Ok boys, stand on opposite sides of the block, and take turns. One of you hold it still, while the other punches it. Try to push a little bit of you mana into your skin. No further though, mana skin is increasing your durability, by having your mana, in your skin, absorbing as much damage as possible. When you push the mana past your skin that is where you get external magic, like Rin's flames."

Rin ran around the block of steel while Yukio walked up to it, and planted his hands on it. "Why don't you go first Rin," Yukio offered.

"Okay," Rin replied excitedly. He closed his eyes and took a few deep breaths, when he opened his eyes, he pulled one fist back, before he punched it. The steel bent inwards and the block jumped and at the same moment Rin cried out in pain.

As the block moved from the force Yukio yelped and shook out his hands. Shiro asked worriedly, "Are you two alright?"

Yukio nodded as he rubbed his palms together, "I'm fine, it just hurt a bit, not a lot but I felt it."

"Small blessings likely due to the advantages to warrior magic," Sylvia speculated. "Why don't both of you boys attempt using Mana Skin at the same time. You should feel a noticeable difference in how much pain you feel, there will still be pain, don't get me wrong, but not as much."

The paladin nodded, "How about you Rin, how did you fare?"

The child grimaced before he looked at his fist, partway embedded into the steel. "That hurt. Also I might be stuck, and don't wanna pull out. It looks kinda jagged."

Shiro smiled reassuringly at his son, "Don't worry Rin, you don't have to. The thing about summoners like Seishiro here, is that the things they summon don't technically exist. So, just like with a wave of his hand he wished it into he can banish it just by stopping the supply of mana." Seishiro rolled his eyes and the block faded away from the top down, he then waved a new one into existence.

Rin placed his hands on the block to hold it still and bit his lip to focus. Yukio pressed his lips together and glanced to his father, and back to the block. "Dad? Why didn't Rin break his hand? He should've, this is solid steel and his fist went inside it, those forces… it would have been more than enough to break his entire hand, probably his arm too."

Shiro and Rin both blinked, and Shiro said, "That is an excellent question. I will admit, warrior magic isn't normally what I teach, so I'm not entirely sure, but I think I remember one time hearing the warrior teacher mentioning that warriors can subconsciously use a small degree of Mana Skin. Just enough to withstand the forces they themselves put out, but not completely protect them. If someone else hit them with the same amount of force as what they can put out, they would get hurt just as bad as anyone else, but they would also typically heal faster too." Both boys nodded before turning back to the block.

"Ready Rin," the youngest asked licking his lips.

Rin braced himself more on the block and called back teasingly, "Hurry up four eyes." There was a metallic bang and Rin slid back a quarter of an inch, and he yelped in pain. They looked to Shiro right as he stood up and blinked the magic out of his eyes.

"Well done boys, that wasn't too bad at all. You both seem to be doing the same thing, you are on the right track, but you aren't putting quite enough mana in your skin, and it's not out quite far enough. You are putting the mana at the inner layers of skin, not the outer ones. It leaves the skin vulnerable, but protects your tissue and bone. It takes time to master, exorcists have to be able to use it in a moments notice. But you boys are doing well."

Rin asked his adopted father, "How do you know exactly what we are doing? I thought mana wasn't visible, yet you always seem to know."

Shiro smiled proudly, "You are both so smart. One of my magics is aura sight. I can see your aura, you can kind of see through it, there are many different things I can see with it, but among them is intent. It can be hard to make out, but if you are good enough, you can predict every move your opponent makes, the intent is also less transparent than the rest of the aura, especially if it carries mana with it. So while I can't see the mana, I can see where it is going. Does that make sense Rin?"

"Kinda?" the boy replied with a hint of confusion as the steel was banished and re-summoned. "I mostly understand, but oh well. Is there any other types of magic anyone can use? I thought you had said everyone only had one or two types of magic, but you said anyone with magic can learn how to use Mana Skin."

Shiro raised an eyebrow. "Yes and no. Mana Skin is a technique, not a type of magic, there are other things that work as well, but the only thing that could possibly be considered a magic type are magic circles. We think it might be the language of the gods, but they take time to use, simply because a small magic circle no matter how powerful it is, is going to be fairly weak. They only work when people or demons channel mana into it, the bigger the circle the more mana it can withstand. With a big enough circle and enough mages you can even stop some demon kings, but not Amaimon. He can break the circle by splitting the earth, unless the circle is designed around protecting an area rather than keeping things out."

As he watched his sons take that in he added, "In addition, Aria, who use mantras and sutras fed with will and mana to either weaken or even banish demons. Using a demons fatal verse is the preferred method of exorcising demons, but it is not uncommon for it to be too deeply rooted in the host, and it will be able to repossess it in a matter of an hour or two, in situations like that, unfortunately, sometimes we need to kill the host."

Rin looked at his father in shock. "Have you…"

"It is a part of being an exorcist, and, as someone who can see the aura of both possessed and possessor…they look to me to know if they can be saved, or if we are required to use lethal force..."

Shiro shook his head, "enough about that. Next there are elemental spells that often are more about using ley lines and Wells, but people who can do that are very rare. There are Runes, but only the enchanters can make them, but once they are made so long as they are fed with mana they will function, it doesn't have to be from an enchanter, anyone can use the created runes, but only enchanters can make them. Now get back to work boys, in ten minutes we will stop for the day."

Here you go, another chapter. A bit more information about the world while Rin and Yukio learn more about the different types of magic which aren't admittedly common knowledge, they know the basic elements that human magic and demons tend to lie within, but not the exact specifics of how it works. I apologize for the delay, some things happened on top of my busy life, but I hope you all enjoyed.

Oops, forgot to mention before so a minor edit, credit goes to SecretEnigma, aura sight was something I was planning on using, but it also was something that changed a bit because I liked a magic described in one of their stories. I did ask for permission, I just kept forgetting to put the credit of the way it works to her, although there are some changes.

Review responses

ChaoticMercy: I'm glad you enjoyed it, but bear in mind that while it isn't completely hidden, they don't know the whole truth either. They know their father did horrible things but they don't yet realize their father was Satan.

zorgon873: I do the best I can, explaining things early is why we haven't started the actual show yet. I want the magic system understood first.

Shiroikage: Yes, yes they will. It won't be easy, but they will do the best they can.

Ray Akaba 210: Good question, I know I already answered it for you, but it is good to give reminders to others who could come to this story late, no, it is not too late to submit OC's, I can always fit them in somehow, some will only be brief appearances, some will be more relevant, but I could always fit more in. right now what I need most are more teachers, worse comes to worse I'll make some myself, which I have no complaint for, but leaving it open for reader inclusion I think would be best.