“Sorry nee-chan, it looks like we have done something terrible.” Told Sora with a trembling voice.

“What? What we have done?” Ask her with a clueless face after hearing Sora's words.

“We should never save Mei and her subordinated before. Human is an evil creature. 100 years ago, a human has infiltrated into our forest and cause a lot of trouble to us. They had killed the male elf and kidnaped the young elf women to be their slaves. At that time all the elf kingdom had been united as one to fight and drive away all of them from here. After that tragedy, all the kingdom had agreed that never involve themselves with the human again. If any of us found out tried to protect the human, they will be destroyed by other elf kingdoms.” Explain Sora from the book that he read before. “They're also a rule said that any human that enters this forest must be killed immediately, to prevent this tragedy from happening again.”

“But… Mei and her subordinate is not a bad person. You see it by yourself, right? She tried desperately to stop my power before even she knows it will risk of her life. If they really true bad guy then they had kidnapped us before while we are faint.” While patting Sora's head. She didn’t agree with Sora's words at all.

Sora was silent when listening to Aoi talk. There is the truth behind her words. Mei and her subordinated is not a bad guy. If not, why she willing to risk her life to stop Aoi's rampage before. She can just leave them alone to settle the problem but she didn’t do like that. Maybe human is not an evil creature as they thought.

With Aoi's words, Sora was calm down a little. However, the problem is still not settled. Right now, they must think of a way to stopped the battle between this kingdom.

“I’m really sorry for what had happened but I think there must be a misunderstanding here. I didn’t protect the human. We just return each other kindness. They had helped us by stopping me from destroyed this forest, so it was a normal thing for us to reply their kindness. Moreover, human is not a bad creature as you think. Human is a had a kind heart, love each other and most importantly they are very friendly.” Aoi tried to tolerate with Calen people and change their minds about humans. After she meets Mei and her people, she can see the human is not evil. Mei and her people have a good heart. Even though they just meet for a moment but their kindness had made Aoi comfortable to be friends with them.

“There no truth behind your words.” Cutting Calen with a high voice while walking back to the front. “Human is born with the evil personality. Their selfishness, greed, and desire for war had put themselves as the evilest creature on earth. They have two faces. They just pretend to be kind in front of you and will stab you in the back when you lower your guards.”

Aoi very shocks by Calen's statement. Its looks like there nothing she can do. Calen's mind has set up a human as the bad people.

“Then… if you don’t believe my word, how about we settle this through a battle. You will fight me in one vs one and the winner is the right one. If I win, I want you to withdraw your people from here and assume this tragedy never happen.” Aoi doesn’t have any choice. Calen is not listening to her word at all. If she cannot listen to Aoi's statement then it was better to let their sword talk. There are some problems in this world that cannot be solved by a word only and had to use action.

“Fine by me but what will I get if I won the battle.”

“If you won, then the three of us will serve under your rule forever, and… also we will help you hunt down those humans back.” With a serious voice.

“Wait… nee-chan.” Said Sero, doesn’t agree with this decision. No matter how many times he thinking, this agreement is not fair at all.

“Just let it be Sero.” Reply Sora. “This the only choice that we have right now. If we win then they will retreat their army from our kingdom and consider this tragedy never happen but if we lost, we have to serve under her rule. But… I want you to believe in our sister's power.”

Sora agrees with Aoi's decision. There nothing they can do. If they keep continuing to protect the human their kingdom will be attacked by another kingdom sooner or later. But if they surrender to them, then Calen and her people will kill all Mei and her people even they know they are innocent.

“Hahaha… all right if that what you want, then bring it on.” With an evil laugh. “Frodo, Garett. I want you to get as far away from here and never intrude on our battle.” Giving order to two of her men while taking out her weapons.

“But Calen-Sama you still not fully recovered from the last battle with…” before the hood person finishes his sentence, he was stopped his word when he sees Calen give a sharp gaze to him, ordered him to get out from there. The hood person noticed Calen's glare and reply “I understand.” It looks like Calen doesn’t want her battle to be interrupted.

“Sora, Sero I want you two also to get far away from here.” Aoi giving orders to her twin brother while taking out her sword from its sheath.

Sora and Sero nodded his head simultaneously and get far away from them.

***

Aoi and Calen are ready to fight each other. After making sure all the people had got far away from that area Aoi standing at her place while holding her sword with both of her hands pointed at her opponent.

On another side, Calen also ready to fight Aoi. She holding her weapons, the double dagger with both of her hands, and enter the battle position.

“Before we start the battle… I want to ask you a question first.” Ask Aoi.

“What is it” Reply Calen with an unpretentious tone.

“Why do you really desperate to start a war between our kingdom? We can let this problem just goes away like that. If you said that human was born with the desire for war, then what makes the difference between you and them?”

“Huh… Since you will be served under me soon then I will tell you. As you know my father is the king of the Edhellond kingdom. From everyone's views, he is a kind and friendly leader. He had a strong feeling for justice and always think about peace. However, they never know even with a personality like that he never admits me, his own daughter. Anything that I do is never is recognized by him. Even when I be one of the guardians, he never says he is proud. That why I will take down your kingdom and make him recognized me as his daughter.”

Aoi listens to her opponent's story with a sad expression. She feels pity for her. Anything she does is never be recognized by her father. Aoi understands her feeling but starting a war is not the solution to the problem. Starting war just will increase hatred between each other and destroyed anything that has been built until now. There must be another way.

“But I don’t think 1000 people is not enough to take down my kingdom.”

“The number is not important for me. As long as I alive, there is nothing to be afraid to.” Reply Calen with confidence.

Aoi takes a deep breath. It looks like her opponent is very confident in her strength. She feels a little bit nervous because she can feel her enemy's power. Calen's power and magic are so strong that can even rival her. As aspect from guardians. Then, Aoi tried to remember Mei's story about her battle with Calen before and from Mei's story, this girl had a really fast speed.

“Acceleration”

Swoosh!

Calen starts the fighting by dash toward Aoi with a fast speed. However, her movement has easily been read by Aoi. Aoi blocks her attack with her sword. “Acceleration.” Aoi also active her speed magic to catch up with Calen. Aoi tried to follow Calen's movement to lunch a counter-attack.

Cling!Clang!Cling!

The sound of their weapons clash. Their movement is so fast until cannot be seen by a people. Then the two of them step back for a second to catch up a breath.

“Amazing (Sugoii)… I never thought she also can use this magic.” Praise Calen to Aoi. “Then… Super Speed.” Calen increases her speed even more and dashes behind Aoi's back. “Take this! Wind cutter.” She lunches wind magic that shapes like a blade toward Aoi.

Aoi realizes an attack was coming from her back. She quickly turned around and cast a magic defense. “Earth wall.” She places her left hand on the ground and suddenly a ground coming up and formed a wall in front of her. The wall was blocking Calen wind magic. The earth wall shattered from Calen wind magic attack.

“So, you can block that right. Then how about this. Fire ball.” A few fires attack that shape like a ball coming toward Aoi continuously.

“Water cyclone.” Aoi uses the water magic to put out the fire magic that Calen uses.

From afar Sora and Sero are looking at their battle carefully.

***

“Genius. Our sister is really known about the element cycle.” Said Sora while looking at her sister battle with a smile.

“Element cycle, what is that?” Ask Sero confusing.

“Element cycle is the basic principle of the element. Elements had divided into 7 categories which are fire, water, earth, wind, lightning, light, and dark. Each of these elements is one that we use to create magic. For example, fire ball is coming from a fire element, wind cutter coming from wind elements, and earth wall coming from earth elements. All this element is very unique because have their own strength and weaknesses.” Explain Sora.

Sero was silent listen to Sora's explanation carefully.

“If you understand this basic principle of these elements then you can counter it by their own weaknesses like our sister do. The fire elements are weak against water, water weak against the wind, wind weak against the earth, earth weak against lightning, and lightning weak against fire. This is what we called elements cycle.” Continue him more.

“Then what about light and dark?” Ask Sero after a long silence.

“Light and dark is a special element. This is because these two elements have not participated in the cycle and only weak against each other. That why sometimes it hard to master light and dark magic.”

“Ohhh… I understand now. But what about the speed magic that they used before? It is not an element right.”

“Actually, speed magic is also a type of element. Speed magic is the combination of wind magic with the agility of its user. They are other some magic that uses the combination of the element to. For example, ice magic is the combination between water and wind, healing magic is the combination between water, earth, and light, and explosion coming from fire, wind, and lightning elements. If you understand the element cycle principle then it was easy for you to know what kind of magic your enemy use.”

Sero nodded his head, understand what Sora said. At the same time, he very proud of his brother because at a young age he already understands the complicated information like that.

From far away Aoi tried to counter each magic attack that been thrown at her. However, she can win with just a counter magic element only. She needs to attack too. Then with the full power, she dashes toward Calen and swings her sword with her full strength. Calen tried to block but with Aoi's strength make her fly away.

Calen tried to get up but Aoi doesn’t give her a chance for her to act. “Fire explosion.” A big fire attack was coming toward Calen's body.

Boom!

The magic attack hit Calen and the surrounding ground making a large mist coming out.

“Did she did it?” Said Sero while looking at their fight from far away. Aoi magic had directly hit Calen's body. The attack must have made her faint or lost consciousness.

After the mist disappears, Calen is standing while holding her shoulder. It looks like Aoi attack just hurt her a little.

“So stubborn, after taking a direct hit from my magic, she still standing there.” Aoi sighing. This is because it was her first time meet someone that so persistent. Fighting another guardian is not something easy as she thought.

“Tchhh… I admit you are really strong.” Said Calen while still holding her shoulder.

“Same to you. I never meet someone so persistent as you before.” Aoi praises her.

Aoi had fought so many people and monsters before. Even though they are strong but there is no match for her. All of them easily defeated by Aoi using her magic and strength. However, this is the first time for her to meet someone that so stubborn and persistent like this.

“Then… how about we two get serious from now.” Said Calen while lifting back her weapons with a serious voice.

“Yeah… that might be right.” Aoi responds to her opponent's actions. She knows that her opponent is not fighting with her full power yet, same as her. They just testing each other.

Then the surrounding begins to change. The two of them had made the strong aura until it can be felt at Sora's place. It was so strong until making some of the Calen armies that looking at their battle from others place also can feel it.

“It looks like the two of them had taking this seriously.” Said Sora.

“Moon Night mode activated.” Said Aoi and Calen simultaneously.