The demon pointed his finger towards Shin and casted an offensive spell. It was a compressed magic and can easily pierce Shin's body. He unleashed the spell and a man deflected it using his fist.
A man with no weapon or even an armor. It was Roger Shyva.
The demon looked at Roger with disbelieved eyes. "What?!"
Roger didn't say anything and turned his gaze on Shin who was behind him, and then stared at the demon.
The demon clicked his tongue and said, "You don't know how to talk? Can't you speak, huh?!"
"..."
"Hmp! How did you manage to deflect my attack? You must be using a magic item."
"..."
"So you're using one. And by the looks of it you must be really scared that you have forgotten how to talk."
"..."
The demon moved towards the man while saying, "You know what? I really enjoy tormenting humans. You lowly humans are really weak and fragile."
He is now in front of Roger and moved his face close to Roger's face. Roger stared at the demon.
"Last time, I have massacred an entire village of elves. HAHAHAHA!"
Roger frowned and said, "So it was you?"
"Huh?"
"It was you who killed those elves."
"Hoh, you know about their massacre? HAHAHAHA!"
Roger punched the demon on the face. There was blood coming out from the nose and mouth of the demon.
The demon looked at him with astonishment. "You! You f**king dumb shit! I'm going to kill you!"
Roger emitted a powerful aura. "Kill me? Why don't you try?" Roger moved his hands like he was holding a sword. "First, you killed the elves. Second, you killed my friend. And now you hurt my son. I'll make sure you're going back to hell, I will kill you!"
The demon stepped back after feeling the aura of Roger. Then, Roger summoned a black sword. It is a black long sword, there is a black smoke that surrounds the sword.
Roger rushed yo the demon and was ready to slice him in half. The demon reflectively summoned a black sword too and blocked his attack. They clashed and countless sound of swords hitting each other could be heard.
Roger made fist and punched the demon in the face again. The demon stepped back.
The demon looked in front of him and saw Roger vanished into the air. Then he heard a voice behind him. "Is this yours?"
He quickly jumped back and looked at Roger who is holding an arm.
The demon thought, (I can regenerate, this is nothing.)
The demon tried to regenerate his arm but it's not working. (What? Why can't I regenerate my arm? Don't tell me he is using 'that' sword.)
The demon looked at Roger and said, "You! Is that a great demon swo..."
Roger made a stance just like Shin and used a skill 'Lion's Strike'. Before the demon could finish his sentence, his head went flying in the air. Blood splashed everywhere.
Roger released the black sword and moved towards Shin and heard a voice behind him. Roger looked back and saw the demon's decapitated head was still talking.
"Y-you... Are you one of them?"
"No. I'm not. I was the one who killed a lot of your own kind using the sword you made to punish the demons."
"Ha! There's no doubt, you must be the 'Guardian of Humanity' Roger Shyva, the wielder of the great demon sword 'Demon Decapitator'."
"Shut the f**k up and die, you're pissing me off."
"Ha! Shame on you!" 8 spider legs grew on the head's decapitated head then jumped towards Roger.
"Roger quickly summoned the 'Demon Decapitator' and cut the head a hundred times, a thousand times, until it became a powder.
Roger's body was covered in blood, he looks like he bathed in blood. He withdrew his sword then finally went to pick Shin.
~~~~~~
[Shin's mother, Ariel Shyva. A S Rank Adventurer before retiring]
Ariel is waiting in front of their house. She knew what was happening in the forest.
Before Roger went to the scene, Ariel and Roger felt a demonic aura in the forest and Roger quickly moved to where the aura is.
She saw a figure of a man holding a child and then approached them.
Upon seeing Roger, her eyes widened and covered her mouth.
Roger opened his mouth, "Treat him, I'll go wash myself up."
Ariel nodded and quickly carried Shin then put him to bed. She used a healing spell on him and healed his wounds.
Roger is taking a bath and as he was sitting, he is thinking about something with a serious face. Then he looked up as if he has decided to do something.
Ariel was sitting beside Shin and she heard a voice in the door. "Is he okay?"
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"Yes. He's not badly injured. It's just mana depletion."
"I see."
"Is it an Arch Demon?"
"..."
Ariel stared at Roger and then closed her eyes and put her palms together then prayed, "O, dear God. Please bless this world with your blessing, and protect us against evil beings."
Roger stared at Ariel then quickly gazed at Shin. Shin is sleeping soundly. Roger hesitated for a moment then he opened his mouth, "My older brother will arrive here in a few days. He heard that there is a lot of demons appearing lately in this area."
"Is he going to fight against the demons?"
"No, he's just going to talk to me."
"What? Then he's going to make you work to the bone again."
"That might be true. But that isn't the case. I can fight against many demons to protect Human Realm. But the enemy right now might not be an Arch Demon."
"Are you saying that the enemy might be stronger?"
"Yes. Like... A Demon Lord."
Ariel closed her eyes and prayed again.
"I've decided."
"What? What is it?"
"I'm going to give him Shin."
"Huh? No! You can't do that!"
"It's for his sake, for his own safety. The Demons might invade the village and in the worst case scenario, something terrible might happen to him."
Ariel looked down and murmured something.
"What?"
"Fine, if its for his sake. Then give him to them." As she hugged Shin tightly, Shin woke up.
"Mom? Why am I home? What's happening, and why are you crying mom?"
(What the heck is going on? I can't comprehend what is happening right now. Why am I home? Why is mother hugging me? Why is she crying and dad... Dad's worried. What's happening?)
I looked at father and asked, "Dad... What's going on?"
Roger explained everything that happened to Shin except the matter that they will give Shin to Roger's brother.
"I see. I lost. By the way, mom. Why are you hugging me? I can't breath."
Ariel let Shin go from her arms as he is buried in her chest.
"Don't be ashamed of losing. That is an enemy that a normal human can't handle. The fact that you were able to inflict some damage on him is amazing."
Shin looked at Roger and smiled.
Ariel nodded and opened her mouth, "Rest for now, your mana has been depleted. It will take some time for you to recover, so rest well, okay?"
"Okay, mom."
My vision is blurring and my strength is fading. I don't know what's going on, is this what they call 'mana depletion'? Damn it. Right, the elf. What happened to her? I need to tell dad quickly and find her. I need to....
Shin fell asleep.
~~~~~
A day later, Shin woke up with full of energy. He went down from his room and looked for his father. He saw his father sharpening his katana.
"Dad."
"You're awake. What? Do you need something?"
"The thing is... I saw an elf on that day."
Roger's eyes widened as he asked, "'An elf?"
"You didn't saw her? I told her to run towards the village. So she would be here. Dad, please go look for her."
He stood up and told Shin, "Let's go look for her, if you encounter someone with the same aura as the demon you fought, run away quickly okay?"
"Yes."
They went out and looked for the elf. Roger went in the forest and Shin stayed in the village to look around.
Shin has searched every part of the village but he didn't see her. So he decided to go out of the village to look for her.
As he went deep into the forest, he found a giant tree that has a small hole in the stem of it. And someone was sleeping inside. He summoned the 'black sword' and slowly went closer. When he finally saw the figure inside, someone pointed a sword on his neck from his back.
"Who are you?" The man gazed at the sword Shin was holding and said, "I see. You're a demon, and taking the appearance of a child."
"I'm not a demon. I'm a human."
"The sword your holding is a definite proof."
Shin looker at the sword and released it, then he raised his hands. "I'm not going to fight, put your sword down and let's talk."
The man smirked and said, "I know how a human kid acts or talks. But you don't posses those traits. So I know that you are not a human."
"I'm special, because I am training to be a SSS rank Adventurer."
"A SSS rank Adventurer?"
The man widened his eyes and remembered something..
-You will meet my son one day. I am training him to be a SSS rank adventure. Though, he is still a 4 year old kid but his skills are on par to a D rank adventurer.
-Are you raising a monster maybe?
-HAHAHAHAHA, that's maybe the case. If you meet him one day. Take good care of him okay?
-It depends on how I'm going to meet him.
~~~~~
The elf inside the tree woke up and saw the kid that saved her.
"Older brother Zeff, no! That kid saved me."
Zeff looked at his little sister and withdrew his sword. He moved towards the kid and asked Shin, "Are you the son of Humanity's Guardian?
"What? No! Who is that?"
"The SSS rank Adventurer, Roger Shyva."
"What? Dad has that kind of nickname? Wait, are you his 'acquaintance'?
"No, I just met him a year ago. He is a friend of my father, the leader of our village. Right, I should introduce myself, I am Zeff Zou Zayne, she is my little sister, Elfie Zou Zayne."
"Ahh, I am Shin Shyva. My father and I went to look for Miss Elfie. He went inside the forest, he must be going back now. Do you want to come with me?"
Zeff nodded.
~~~~~
They went back into the village, all of the villagers are looking in their way. They got home safely.
Ariel saw them and approached them. "Zeff? Is that you?"
"Miss Ariel. Long time no see."
"Mom, you know him? I thought he was only an acquaintance of dad."
"I was with your dad when we went to their Village."
Roger went back home and saw a familiar figure in front of his house. "Zeff?"
Zeff looked back and saw Roger, "Lord Roger."
"I'm glad you survived. Wait, that's Elfie?"
Elfie grabbed the hands of Zeff as he looked at Roger.
"Yes. By the way, I'm sorry. I couldn't protect our village. Even though my father sacrificed himself to protect everyone, they all still got killed."
Roger patted Zeff's shoulder and said, "Then, you must protect your little sister."
"Huh?"
Roger smiled, "There might be a reason why you guys were the only one to survive. Then seize it, become stronger and protect your little sister. Anyway, let's go inside."
~~~~~
The next day, Shin woke up early and trained his sword. Elfie saw him and approached him, "Uhmm, Shin."
Shin stopped and looked at Elfie, "What is it?"
"There's something I want to ask."
"Tell me. What is it?"
"The thing is, when you were fighting the demon, your body was emitting a strong aura. The sword was also in complete sync with you. The fact that the sword chose you as its owner is amazing, and according to the book I have read, it is said that only a demon or someone with a demon blood can wield a demon sword."
Elfie grabbed her bag and took out a book then added, "Look at this Shin, your sword really looks like this sword."
Shin went closer and looked at the book Elfie was holding.
"The Great Demon Sword, 'Demon Slayer Sword'. That sword is said to punish and kill demons, the book said that the blade can cut through magic of demon, and the blade of that sword is toxic against them."
"I see, so that's why he acted like that. But I still can't beat him even if I am using a great sword."
"That isn't the case Shin. I told you, a demon sword can only be wielded by a demon or someone who has a demon blood, but sometimes, it chooses a human. However, that sword is on a different level, there are Seven Great Demon Swords in the world, and that sword your holding is a great demon sword, where it's owner should only be a demon or someone with a demon blood."
Shin looked at Elfie with a surprised look as if he realized something.
Elfie looked at Shin with a serious face and asked, "Shin, what are you really?"