Saint Arcane Church / North Field 

It has been quite a long time since Arsen begin to taught the four sword disciples. Because they already have experiences long before, it didn't take long for them to reach the expectations Arsen had hoped for.

"And it is time to start teaching you kids the way of Sword Casting."

The area at that time is quite because that is lesson time. The usual group that gathered to watch the sword teacher is still in their class. Even though they were stifling because the physical class started earlier than usual.

For some reason, they brought so much of their wooden sword stock to the training. 

The sword master holds one wooden sword, but now with his right hand. That is quite odd, because they thought the sword master is left-handed. 

Four of them are feeling nervous. The sword master finally will show them the way of the strongest Arts: their sword master said.

"Oh ya, I forgot to ask that four of you is certified to use Arts, right?"

Four of them at the same time answered: "Yes, sir!" 

The sword master smiled proudly. "Good, though I'm not believe it, but that's alright."

"Wait!" "That's not alright at all!"

The twin stopped the lesson because of their sword master jokes (?). 

Four of them literally surprised, unexpectedly, their sword master has a sense of humor. But they still disagree that their sword master doesn't want to care about their ability in Arts.

Kane takes the initiative to convince the sword master. "Master, could you at least take a look or measure our capability to control Arts? And see, are we really capable of learning Sword Casting?"

"Yes!" "Please!"

Four of his disciple united to ask him, Arsen could not refuse their request.

"Oh, okay. In that case, each of you take one wooden sword, then try to flow it with Wind Arts."

Each one of them do what they being told to. Take one sword, hold it with their right hands, then cover their sword with Wind Arts. 

They concentrated. Each of their wooden sword start flowing by wind. Aiden's Arts is the most prominent of them.

"Ok, stop." 

They stopped at the sword master order. 

"How is it, Master?" asked Kane.

"Well, you can't judge Arts user by their Mana quality and capacity, but in their capability to use Arts. For example, someone with high Mana capacity trying to defeat his opponent using Cyclone Arts. His opponent in other side only has a little mana capacity. This dude is capable on make use of his Arts well. He cast a sharp arts to cut through his opponent Cyclone Arts and beat his opponent."

"So the point is, no matter how big or strong your Arts, if you cannot use it well – "

"Then that's trash."

The sword master gave a good sample to them. Though the twin one still has it difficult to understand. 

"That's why I said it's all right even your Arts quality is shit."

"Shi - ?!"

"We will develop your Arts together with your Sword Casting in this class."

The sword master has always a very good point on his words. Although he gives his disciple sarcasm sometimes and that hurts their feeling a little. 

"Ok now, I will demonstrate of how the Sword Caster-ing works. Ah, one last thing, can you guys use [Arts Vision]?"

The four disciples surprised by the question. 

"That is – " "A hell of a high [Skill]!"

[Arts Vision is a skill that allows the user to see mana originating from the use of Arts.]

"No, Master. Only the professor and two students of the church could use that skill," answer Kane.

"Who are that two?"

"Elizabeth and William."

The two smartest disciples of the church, also a rival of their own field. 

Arsen immediately realized the two students. 

"I see."

"Does [Arts Vision] required on learning [Sword Caster-ing], Master?"

"No, but it's better for you to master it. Then that will be your additional homework."

Done with his lecture, Arsen lift his wooden sword, release it in the midair, then somehow the wooden sword is floating in the air. 

The four disciples got startled. That demonstration blows their mind because the standing wooden sword did not appear to be covered by Arts. 

"What the?"

"Wait!" "How!?"

Aiden lost his words on the sword master ability. Then a great curiosity overflowed within him. 

"How do you do it, Master?!" asked Aiden in high spirit. 

Arsen smirked because of the high attention he got.

"It's great, right? Praise me and I will teach you how to do it."

It made him greedy for compliments.

"You are awesome!" "You are handsome!" You are the ideal white knight." "Although your hair and impression is all black!" "Even though you are playboy criminal!" "We are so adore you because of your sword ability!"

"Hey, where did you get that playboy criminal nickname from?"

Arsen has not even touched any girl or woman in the church. 

"Well, whatever." Arsen begin the lesson again. "The idea of sword casting is to fill, not covered, a sword with mana."

"Fill – " "A sword with mana?"

Arsen takes the floating sword back to his hand. "So we can say, the sword becomes the Arts itself."

"The sword – " "becomes the Arts itself?"

The mind-blowing Arts has mind-blowing explanation, and it is hard to understand.

There Arsen gives more explanation. 

"Think of the sword as a medium. You fill it with mana, not the usual way of Abyssal Arts that covered the medium with mana. The mana goes in to the medium just like water goes in to your body when you drink it."

"Medium. Fill it with mana." "Just like water that we drink. It goes in to the sword."

The twin still find it so difficult to understand the way of the Sword Caster-ing. But the one who always being quiet and listen, Aiden, looks like he begin to understand slowly but surely. 

Arsen realized that and called the smartest one of them. 

"Aiden, come here."

Aiden get closer to the sword master and waiting for further orders.

"Now listen." Arsen will give them further explanation and real example. "The idea of Abyssal Arts is using a medium to cast a magic spell, either it's for offensive, defensive, or healing Arts. Yes, the stronger the user Abyssal Arts and the medium the user used, the stronger the magic spell will casted."

Arsen gives a demonstration of [Wind Arts: Wind Slash] that launched to one hitting target. 

"That is the usual way of offensive Abyssal Arts. But Sword Casting is different. We use the medium, our sword to become the magic spell itself."

Ars launched his wooden sword to one hitting target like a bullet, then the launched sword brutally destroy the hitting target. 

One more thing, the wooden sword can't be seen because it destroyed along when hit the hitting target. That startled them even more. 

"What the – " "Hell?"

Arsen looks at his smartest disciple and asked: "Begin to understand how it works?"

Aiden still doubted his ability to understand, but saw the expectation that lay in his master's eyes – "I will do my best."

The four sword disciples lined up sitting cross-legged by holding a wooden sword in their right hands. For some reason, the sword master also told them to hold their wooden sword far from their faces. 

"Breath mana, feel the mana that flow in your body, feel the sword as part of your body, and direct it to the sword you hold."

The twin try to push their breath hard, till one of them emit gas from their anus. 

Fart~!

"Pfft!"

Plak! Plak!

"Aw!" "Aw!"

Their sword master spank their back with his wooden sword to reset their concentration. 

Kane tries hard to not get distracted, and finally can cover his wooden sword with mana. 

Plak!

"Aw!"

"Fill it, not cover it. It's two different things."

The quietest of them, Aiden, is in full concentration. 

'Breath mana, feel the mana that flow in your body, feel the sword as part of your body, and direct it to the sword you hold.'

He repeating the sword master's words as he starts to fill his wooden sword with mana. 

The rest of the people realized Aiden begin to capable of filling his wooden sword with mana. 

The scene started to get tense as Aiden looks like he can fill his wooden sword with mana, the first way of doing the Sword Caster-ing. 

Aiden focused more as he feels he filled his wooden sword with mana, more and more. Until it suddenly exploded.

Boom!

The explosion shocked the whole church and make them run towards the problem site. 

Liliana, the Deputy of the Church, came right towards the sword class, which become messed with the students laying down, messy. 

"Professor Arsen, what happened here?!" asked Liliana. 

When his four disciple are messed up, he is fine somehow. 

"I am sorry for the incovenient, Professor Liliana. One of my student made an error during our training."

"And that caused an explosion?"

"Breakage Arts more precisely."

"Breakage Arts? But why?"

On the Deputy of the Church interrogation, the sword teacher walks closer to his interlocutors. 

Because of the charisma and handsomeness of the sword teacher, Liliana became stiff and shy. 

"I am sorry, Professor Liliana. But could we speak further about this in four eyes? Because I did like to continue my class. Of course, I ask you too about the permission on continuing my class outside of the town if it's possible?"

Liliana cannot hold that much of the sword teacher's charm in public. So she backs up a few steps and immediately answers:

"I-if it's for our and the sword disciples' goodness, I approve. But I ask you to do not bring them too far from the safe perimeter."

"I shall thank you," said Ars as he bows to Liliana like a knight. 

That scene is so memorable and made the commotion crowded in admiration, suspicion, and jealous. 

Meanwhile, the sword disciples cannot say anything about the sword master charm. They just muted themselves and follow the sword master in proudly.