To make sure that their offensive aura wouldn't make damage to the people below, Leon made a sealing barrier encompassing him and the others making their auras clashing to each other.  
"Father, do you know them?" Amaris asked but Leon couldn't answer. Not that he doesn't but he know them very well since they are once companions and buddies. But knowing those people, they aren't cruel and someone that would eventually change in just a blink. More so to bring disaster to the humans they so wanted to save... this is clearly wrong. Except...
Leon's people are agitated and on the edge but the others are smiling, almost as if mocking them. Since because of the staled time, Leon couldn't help but feel the thread of patience inside of him is near on being cut but what makes him on the edge is the familiar faces that is smiling at him with contempt and hatred unlike to their smiles and admiration before. 
"Are you..." He gulp the rest of his question down his throat. He couldn't bring himself to ask them what happened to them and why they are hostile to him.  
But the man that is known to be gentle and quiet snorted and pointed at him with so much bloodlust which had affected the children behind him but he raises his hand for them to stop.  
"It has been a long while hasn't it Leon? It seems like you didn't change at all from the first time we met and it seems like you grew even more stronger. How fantastic is that? What is your secret?" His whole expression from earlier had been washed away at the latter end of his sentence. It's chilling and contains murderous intent that made the two pixie devils grind their teeth.  
The man that went to form a conversation with Leon is Rickenson Barnes, the gentle friend he once has and a loving husband to his wife which currently killing Leon by her stares. Among them, the one that remained the same like what Leon remembers is John Smith. He is someone that doesn't talk too much and always been looking at the group. He is the observer and the eye of the group that perfectly suits his personality. Someone smack the head out of Barnes and a huge burly woman step forward and brandish her axe that is larger than her. Seeing her, certain someone pops into his mind and that greatly infuriates the woman.  
"Are you looking down on us now that they see you as their hero? Do you want me to beat you up right here, right now huh?" Her strong aura came out of her body and that made the others feel out of their breathes. Leon had expected this already and that's why he's worries about when the fight broke in here, the Earth's brittle core will be broken.  
[Amaris I'll bring them inside the gate.] 
Amaris abruptly turn her head towards Leon and look at him with much anger.  
[Did you not see how powerful they are? I need to at least come with you!] 
But Leon shook his head because there is still unfinish business between them and that is needed to be settled between them that's why without even asking for permission, he already uses his skill >mass teleportation< and all five of them went inside the cruelest side of the gate 
The harsh fire and molten surface that once you touch, you'll get charred skin. Sizzles and black smoke came out of the body of the four that are displeased and evidently showing their dissatisfaction in the place that Leon choses.  
"It's been a long while since we've seen this gate. This is truly magical don't you think? We've search the gateway that leads to this but we couldn't find any possible path and you? Haha! Always you clever boy Thournefield! Now I am doubting if it was really a disaster or a well made plan of yours?" They all laugh as if what they had concluded is correct without even consulting Leon that is currently finding the resemblance of the people from his memories and the people present to his face right now. The more he is trying to seek, the more the pain is getting inside of him.  
"What happened to all of you? What... is the reason for you all to turn towards the wrong way?" Everyone is looking at him and after what he said, they all burst into laughter like what they just heard were just a magnificent joke. The same time with their ridiculous outburst is the system's finding.  
『The outer interference couldn't be distinguish. I am afraid I have insufficient access to continue investigating anymore. What's certain is that, there is only 1% humanity left to them and that is the skin that they are currently at. Sir, don't be fooled and swayed by their words. They are no longer the people that you once know. I advised for the needle to be standby since they are capable to block me. 』 
Leon nodded and like what the system told him, he summoned the needle which made the enemy stop laughing and become extremely serious. 
"It seems like you murdered a whole bunch to make that creepy syringe to be at that state. How marvelous! Are you breeding new sacrifices so you get stronger huh? Is that it? What are we going to do inside this crappy place? Play houses? Haha!" Robert Swanns is someone that jokes around and do not take the situation seriously which had made the boring journey fun because of his jokes that right now felt not really that nice to hear. But before he could even answers, Allen Fendrik dash towards him and swing the axe down to cut him vertically but to her disappointment Leon dodges by jumping to the side and hook her with a spinning kick into the back of her head that had landed successfully. But when Leon thought that he made damage even when he saw that her neck become longer because of a damage tissue, the cracking sounds of bones that made him want to feel the pain continuously to pop until Allenise Fendrik turned to him and attack him again.  
"What the heck have you done to your bodies!" A sword coming to his side which he meet with his own sword before his other hand stopped the axe before he kicked at his front and run upward, flipping back, twisting his body so he could give a hook kick from the air down to Gunther D Brave that is going to sneak some attack to him.  
BOOM! 
When he landed, the molten rocks scattered and so their bodies were being damage with it but not Leon that had already adapted to this kind of temperature and environment. The acid levels were burning to the skin that's why they look like wax figures that is melting from the high temperature and yet they are still doing fine with it.  
"WHY ARE YOU SO F*CKING PERSISTENT! CAN'T YOU JUST DIE AND DON'T GIVE US THE HARD TIME HERE YOU F*CKING VILLAIN!" At the same time, Leon is calm and inside him he felt he wanted to burst out. While their outer appearances is no different with his companions before, the voices that he is hearing around him is large enough for him to ignore.  
"Let's go f*ck this a*shole out!" Gunther D Brave shouted and within his blade is a red glow that is familiar with Leon. This is the same virus that can corrupt and make damage to his system. Obviously it's superior but that is only if he doesn't have the needle to suck it out.  
The only downside is if the needle could handle it.  
『Don't worry sir, we can manage after all we needed much to update the system too. Do you remember the homeworks that I had given you? Be creative sir. You can do it!』 
Thank you for encouragement but these beasts is too much for me to fight my own! 
Taking a blow from his side, it's a cut almost to his liver but luckily it was just deep and still can be healed. Seeing this the enemies snickered altogether and jumps again for barrages of attack.  
That's when Leon found something odd.  
"Do you think you can win?" He meant to agitate them with this sentence but to his surprise they all jumps at the same time but done different attacks base to their specialties.  
『Save... me』 
『K...kill me... I beg...』 
『S...i...r』 
『Le..on.... kill me..』 
Leon look to the four that alternately raining him with blades and punches. He is certain of it. He heard the true voices of his first friend. Allenise Fendrik, the gentle giant that he knows.  
Imbuing his needle with water element, it has a blue glow which makes the simple grayish needle quite appealing. He slashes Allenise Fendrik's body and it was cut open but slowly being fixed like it's normal to do.  
But Leon in every slashes can hear the voice of his friend and that's when he learned that like his brother, they too cannot be saved alive. His heart aches for once again, doubting them of betrayal just like what he does on his brother. A mistake that he swore he would not do again and yet. Leon felt like he got slashed a hundred cuts.
『Leon... I am thankful to see... ugh! you safe...』 
『I am also happy that you met my grandson... he...he is quite a handful you see...』 
『The only way to... ack! save us...kill us! Kill us!』 
『We are tired already... we... don't want to harm humans...』 
『Gunther... ack! Is sorry... he is...ugh! actually a good guy...』 
『Kill us Leon... please... ahhhh!』 
Leon started to tear up but he wipe the tears away like how he is getting determine to kill them all. He changes the characteristic of his sword and it turned icy cold. As of now, he can only manifest three elements and that is water, air and fire. By hardening the water and making cramp as possible, the temperature will drop tremendously, making it freezing enough to spread its chilling ability.  
"There is no point in keeping you all alive. I shall meet you at the right time." They couldn't understand what Leon truly meant but they know the danger behind his blade and the needle that started to launch smaller ones and shoot towards them, attaching to their limbs and body.  
He knows after this, he couldn't and wouldn't be able to step foot on Earth that's why before he went away, he will leave them a present.  
System, are you able to fix the Earth's core? 
He is being cut by their weapon and yet he continue to cut them like they are endless stream of zombies that pouring for him. 
『Yes sir but that will also make a toll to your body since handling enormous power is one thing but ultimately releasing it all at once might consume your life.』 
Leon is resolute to make the Earth whole again even with the expense of his life. What more is he afraid of? He has many thousand years to spend for f*ck sake. Just like Barnes, Fendrik, Swanns and Smith, Leon is tired as well. Being powerful is a burden that shackles Leon to life and away from death. If what Fendrik told him is true that Brave is not that bad then he also deserves the comfort of an eternal enemy that ends all. They are all fragments and figures of the past now. All they wanted is peace and that is only possible if they leave the present to the later generations that they cultivated. Leon smiled and that made the enemies confused.
The needle started to suck the amount of power they have and yet they continue to fight even if their arms and legs are giving way. Seeing this Leon couldn't help but tear up. He wanted to end them peacefully but that is a far cry to do.  
『Amount needed to upgrade met. Multi-function activated! Upgrading while functioning permitted!』 
The system is doing its best to satisfy the needs of Leon why he is mercilessly annihilating and making them mince meat.  
While he is swinging his arms from left to right, he is also listening to the voices of people that he is acquainted to. 
『Thank you...bro. It's really nice to meet you.』 
『Take care of my people....sorry for everything...』 
『Don't be hard on yourself...ugh! We are ...fine... Tell us stories when we meet again!』 
The more that he hear their voices the more he felt sorry for them that's why his slashes, with all the words that he wanted to tell them and the words that is not coming out of his mouth continue slashing. The power that is extracting from them are overwhelming Leon and blood begin to flow down his nose.  
But he continued on slashing his swords. Even without a leg or their stomach is cut in half, they still move forward as if they were drugged. They who are ones laughing with him are being violated and gruesomely being turn into horrid pieces, Leon wanted to vomit.
There's one point that he wanted to give up but his hands continue to slash because his body knows. Deeply inside his mind knows. The only way to save them is to mutilate them to nothing. Leon would be once again be painted as a gruesome and fearful villain that killed his friends to nail his position on Earth but another version will be passed on tongues and continuously will keep the truth alive even for eons to come. The might of a sole Elite that had continuously save the Earth that condemned and abandoned him. The Great Devourer, Leon Thournefield. A name that will live for eternity.
"I wanted to thank you for everything and the journey we have shared together but most of all, I am sorry for everything and this... I am sorry that I'm late. I'm sorry that you have to suffer like this but... hulk! Rest assured, I will take full responsibilities to everything so please... have peace." There are four orbs that is floating in the air. It is full of impurities that if someone happen to get near to it, they will immediately get infected with it.  
But to Leon and his elements, this is nothing but a flimsy mistake of his enemy. He slashes his ice sword to the orb and it's instantly coated with ice. Soon the cracks became visible before it turns into small particles that disintegrate in the air.  
Leon collapses to the ground with his sword went back to his storage. It's heartbreaking. He clutches his heart and punch it but the pain is not enough to overpower the one that he is feeling right now. He felt like a fool for just submitting with fate but what is he supposed to do? He is just someone that is weak. He hope to just perish but not until he ensures the safety of Earth. 
『I will be undergoing the fixing of Earth. You can rest for now Leon. Rest. You need it.』 
He doesn't know but he didn't retort back to the system and closes his eyes. He didn't notice that someone picked up his body and put him in his home with care and affection.  
Once upon a time, there is a System mocked for being lowly but risen to the top.
Once upon a time, there is a child that is born from a love so short it can never fill a book but she will fill the Galactic Archives of her achievements and triumphs.
Once upon a time, multiple version of his life will be forbidden to be accessed in the Galactic Archives but not one single person wouldn't know of him. He will remain as a mystery because no one can confirm if he is gone or perish. But one thing is sure. He will be a someone that eternally alive in people's heart and wishes. He who fights alone and he who fight to be alone. He that ended apocalypses and catastrophes. He will create a lot of miracles that nourish all universes.