Emma pov
When I saw her assessment I was really happy to have Cid next to me, but what worried me was this aura that was around her as if she was death itself. When she changed her visor into a mask I knew she was getting ready to take on both of us. The advantage we had over her though is that I know a lot about Artoria's age from the anime and one of them is that she doesn't have regeneration like we do, which means we just have to bombard her with attacks until she gives in. So the fight started, she stormed towards us and swung her sword as if she wanted to cut all three of us in half at once, Cid and I managed to dodge it but Aurora was currently in her weakened form without magic so she was split in half and scattered into shiny particles. Cid looked annoyed but now we had to take care of ourselves, she showed what she wanted to do to us. I quickly went into my system where I keep all the super strong buffs and activated them. Now I was even a little stronger than Cid for an hour. With that, our swords clashed again. We exchanged blows wildly for a while, but neither of us could gain an advantage. At that moment, all of the storage capsules opened and Wan could see the hundreds of Olivers coming towards the three of us. As I saw them coming closer and closer in slow motion, Cid looked at me and nodded. He wanted to end it with one blow. Everything started to glow purple and the magic continued to rise and just before the Olivers could reach us, Cid spoke. "I am Atomic" Boooom Everything was simply destroyed and a huge explosion came from Cid that simply dissolved everything in its path because only I and Cid were immune to this atomic magic. The energy discharge lasted another minute until everything calmed down again and a kilometer wide crater was seen that destroyed the entire research facility and all of its enemies. I would have said that if I hadn't seen Artoria 100 meters away from us. She had lost an arm and was burned all over, but she was alive and her wounds and limbs were healing at a speed that was visible to the eyes. Cid did not let this opportunity pass him by. He spun his sword and struck her head vertically. She was able to successfully parry this blow with her sword. When the two tried to overpower each other in a short stalemate, I attacked from her side and tried to stab her in the burst. When that didn't work because she caught the sword with her almost healed hand, I kicked her out of the crater towards the dam, and Cid and I quickly followed her. You could see how she had already landed, charging her sword and shouting "Excalibur Morgan" loudly. Only Cid was able to escape the mighty attack. While I tried my best to protect myself from it, it hurt like hell as I was slowly burned, with all my effort I managed to escape from her attack. The cost of only being in her attack for a short time was unimaginable. I had used up almost half of my magic on defense and my burns still needed to be healed. I used up the remaining points I had in the system and refilled my magic completely. After that was done, I looked back at the battlefield where the two of them kept meeting each other until Artoria ducked under one of Cid's attacks so that she gave him a powerful kick in the stomach, causing him to fall into the city. Artoria looked at me briefly before following him. Now she knew what she was planning. She wanted to finish off Cid first before she came to me. I couldn't let that happen, so I quickly followed them. I felt sorry for the many innocent people who would die because of our fight, but I could only grit my teeth and carry on fighting against her. The destruction continued to increase. Buildings collapsed, huge chasms appeared in the streets and ordinary people were cut to pieces. It was truly a gruesome sight. But that wasn't the worst part. The worst thing was that she now started using Mana Burst, which made her attacks even stronger and more destructive, to the point where we could no longer feed on her. I really hoped that she would slowly run out of mana, but it seemed like she had an infinite amount of it. Every hit we gave her, she regenerated without any effort. We fought like this for the next 20 minutes, reducing the entire Holy City and its inhabitants to rubble.Cid and I looked at each other, both knowing we would lose if we didn't manage to destroy them in one blow. We had never tried it before because it would destroy a huge area and cost a lot of magic, but we had no other choice. We surrounded them from both sides and gathered our magic to the climax, drawing purple circles above us and speaking in unison. Artoria did not remain idle, however, as she increased her power to the limit with Mana Burst and shouted at the same time. "ExcaliburMorgan" "We are atomic." The black and red beam hit the purple formation and the two forces fought for dominance until they reached a critical point and canceled each other out, causing an unimaginable explosion to shake the earth and hurl us and everything in its path away. The shockwave threw up huge amounts of dust, ensuring that no one could see anything. I tried to find her through the thick dust but when I looked at my brother I saw out of the corner of my eye that she was only 50 meters away from him. I accelerated as fast as I could towards Cid who was still a bit disoriented and managed to push him out of the way but the sword hit my arm which was severed. When we got some distance from her I could see her exact condition and apart from some dirt she looked like she hadn't fought with us for almost half an hour. If I remember the anime not even All Evil of the world could heal Artoria like that the only one who had such unlimited healing was Avalon but I couldn't see her anywhere which means she has it in her body. So we had lost the moment we couldn't kill her. Ahh shit losing an arm is damn painful I only have enough magic left to close the wound. I wanted at least Cid to survive I know she's after me so maybe I can distract her long enough for him to escape. I whisper to Cid next to me. "I'll stop it, please go, she wants me." But all I get is a serious look from him before he says out loud. "Do you really think that I, Shadow, would leave you in your moment of greatest need? Either we win together or we die together." These words reignited the fire in me and we stormed towards our common enemy for what was probably the last time.
Artoria pov
This fight with the two of them has done me the most damage by far. If they had been able to see under my mask this time, they would have noticed my broad smile. Since my new life, I have never had such strong opponents who could fight me to such an extent. That is why I will give you the death of a warrior - that is the only thing I can give you.So we collided again but it didn't stop at just one time. We rose into the sky and collided many times until I blocked the Reincanator, which allowed me to give her a deep cut in her right side. Shadow blocked the attacks that followed, but you could see that she was on her last legs. After a minute of fighting Shadow, his strength also weakened so I was able to free myself from him and move towards the woman kneeling on the ground, I think it was Emma. When I was about to behead her, she stared at me with a sad but determined smile as she swung her sword one last time, but not to block my sword, but to hit me. And then we both hit our target. I cut off her head, her blade cutting down to the middle of my body and it was now stuck inside me. Instead of pulling it out, however, I turned around and said to Shadow, who was staring at me eerily. "I came because of this anomaly and since you gave me such a good fight, you decide for yourself if you want to keep fighting or just leave, even if I already know the answer." With these words, I ripped the sword out so that everything could heal again. "I take care of my loved ones and try to protect them as best as I can, but you killed the most important person in my life, how could I just leave without trying to avenge them." "You made your choice, warrior, so let the fight continue." The blows he threw at me were still extremely strong despite his low magic levels, but in the end he could no longer keep up, so I parried his attack and stabbed my sword into his heart. He seemed to be fighting to pull the sword out of himself, but in the end he fell to the ground. I pulled my sword out of him when I saw that he had lost all signs of life.After all that, I was ready to return to the estate to take care of the last business on this planet. When I entered, I saw 6 girls tied up and staring at me angrily. Oh, only now did I realize that I had forgotten to change my fighting mask back to my visor. When that was done, one of them screamed. "Who are you, where is Master Shadow?" "I had a fight to the death with him and his sister, and I obviously won." All the girls had tears in their eyes, and most of them said. "No, Master Shadow would never lose." "You're lying, how could he lose to you?" "No, please let it be a lie." They said and screamed all sorts of things as if they had gone crazy. Since I didn't feel like it anymore, I grabbed the extra tightly tied Delta and pulled her into the middle of the room. She was still growling at me as best as I could while I positioned her so that everyone in the room could see. "Look closely, only my favorites get this treatment." With that I began the transformation process in which she was transformed from the All Evil of the World into a cocoon, just like before. After a while the cocoon finally cracked and revealed Delta's new appearance.She now wore tight fitting dark purple armor instead of her previous uniform that only covered the most important parts of her body like the chest and hips, but she also wore clawed gauntlets and armored boots. As for her head, her hair color had changed from black to silver while she still had her now red stripes on her face. After she stood up, she stared at me like a puppy and showed me her deadly sharp teeth before screaming. "Thank you boss, thank you for the gift." "What have you done to her, Delta, wake up, don't let her manipulate you." "Relax, it will be over quickly. Eto, give them all the same treatment." "As they wish."