After Kokabiel left for the track and field, Sona called her Peerage to set up a barrier around the school ground. This is to make sure that Kuoh won't be in danger. But I told her that it was unnecessary. Then I sent all the people in Kuoh Academy into the Mirror Dimension. They didn't even know it. The only indication is that the place was momentarily distorted like broken glass.
"What the? Where are we?" Sona said while pushing her glasses into place.
"This place is called the Mirror Dimension. A place I use to train," I said.
"But it looks just like the real world, almost like the place the Rating Game takes place," Sona said.
"There is a big difference between this place and the Rating Game location. This place isn't limited to a small area," I said.
"Anyway, we have to go where Kokabiel went, and I believe that's the track and field," I said. Then we headed in that direction.
When we arrived, we all saw Valper trying to fuse the Excalibur fragments that he had collected. Looking in the sky, I saw Kokabiel sitting in something akin to a throne. No one saw him. He was watching us before he spoke.
"I heard that Valper has been dying to fuse four Excaliburs into one," Kokabiel said. This caught the attention of everyone.
"Kokabiel!" Sona and Rias said.
"So? Is either Serafall or Sirzechs going to come?" Kokabiel asked. He didn't care which one arrived.
"Neither. Not like they can come here anyway," I said.
"Hmm? And why's that?" Kokabiel asked.
"You still haven't realised it have you? We are no longer in the Kuoh that you know. Why don't you try and detect any living beings? I bet you won't be able to, except for those that are here," I said. Kokabiel did as I said, and he couldn't feel a single lifeforce that isn't ours. This made him angry.
"That's impossible! It should be impossible! How were you able to evacuate the residents of Kuoh in such a short time?!" Kokabiel shouted.
"Oh! We didn't. You're right. It is impossible to get the residents of Kuoh evacuated on such short notice, but we didn't have to. Instead, I sent you and your posse here, in this dimension. You didn't realise it, did you?" I said. I was taunting Kokabiel on purpose.
"Since you've bothered to come here, why don't you all play with my pets!" Kokabiel shouted. He then summoned two Cerberus.
"I'll leave the Cerberus to you guys. I'll deal with Kokabiel personally," I said.
"Ise, wait!" Sona, Raynare and Asia shouted.
"I know that you're strong, but Kokabiel is a Cadre. He is one of the few survivors that fought God. I don't want you to die," Raynare said.
"She's right," Sona said.
"Ise…" Asia said with a worried tone.
"You girls don't have to worry. I'll be fine. I have something that will prevent me from dying. Besides, I haven't shown you everything I'm capable of," I said with a smile on my face. It was closer to a smirk.
"Alright. I'll believe in you," Raynare said.
"I will too. But please, if you're in trouble, leave. I don't want you to die. For once, I was able to find a man that I don't despise. I don't want to lose you now," Sona said. I just nodded and headed towards Kokabiel. I had to take out the Cloak of Levitation since Kokabiel was in the sky. He saw me and stared.
"Heh! That's interesting. Amongst you all, I thought it would be the Gremory that would fight me, not you. But no matter, after I kill you, maybe that Sitri heiress would come after me," Kokabiel said while tossing a massive light spear my way. I blocked it without effort. I wasn't trying to stop Kokabiel now. I was wasting time. I want to see the power of the fused Excalibur first-hand, after all.
"It won't be that easy to kill me," I said while having a Tao Mandalas on both hands.
Back on the ground, Xenovia, Rias, Sona, and the others were fighting against the Cerberus. Unlike in the show, they didn't have trouble dispatching the hellhounds, and thanks to Asia, all injuries that they sustain doesn't last long thanks to her healing field. But despite all they did, they weren't able to stop the fusion of the Excalibur fragments. Not that I helped.
"Ha-ha-ha! Now that the fusion of the Excalibur is completed, I can take the energy released from the fusion and use it on an Earth-Breaker Spell! This town is done for!" Kokabiel shouted with a manic laugh.
"Are you stupid? Did you already forget what I told you before? This isn't the Kuoh time that you are familiar with. This Kuoh town is inside of the Mirror Dimension. Nothing you do here will affect the real world," I said. Kokabiel's laughter disappeared and was replaced with unbridled rage.
"Ahhhh! You will pay for this! I will make sure to break every bone in your body before I kill you. I will make you suffer! Carlos! Take the Fused Excalibur and kill all the Devils! This man is mine to torture!" Kokabiel said.
"Impressive! You have such a powerful weapon, and you give it to the person that lost against the two Church Associates? Why don't you take the sword for yourself and show me what the Fused Excalibur is capable of!" I said. Everyone on the ground was confused as to why I would suggest such a thing to Kokabiel. I just made everything harder for myself.
Kokabiel then took out a crystal. He then absorbed it onto himself. This was a crystal created to give the one that absorbs it the power to wield Excalibur. After Kokabiel absorbed it, he then took Excalibur. The first thing he did was kill the ex-priest named Carlos and Valper while having a burst of manic laughter.
"You're right! Why should I give the power of this sword to an inferior race?! With this sword, if I was to kill the Gremory or the Sitri heiress, the Satans will think that the Church did it! Ha-ha-ha! Thank you for giving me such a wonderful idea! As thanks, I'll tell you all a little secret. God is dead! Ha-ha-ha! And me being able to use the Excalibur is proof of that," Kokabiel shouted. He then flew towards me with the Fused Excalibur, ready to kill me. The moment the blade was about to hit me, I parried it with my sword…My own, Excalibur!
"W-What is that sword?! And how is the Light it emits far more powerful than my Fused Excalibur?!" Kokabiel demanded an answer.
"This, this is my Excalibur! The Sword of Promised Victory! A sword unlike yours!" I said. I then cast a spell that would disable the ability of anyone to fly. Both Kokabiel and I dropped from the sky. I fell because I chose to. As for Kokabiel, he fell because he couldn't counteract the power of the spell.
"Impossible! There is only one True Excalibur! And they were fragmented into seven pieces! That sword in your hands cannot be Excalibur!" Kokabiel said.
"Believe whatever you want. It doesn't change the facts. This sword is Excalibur," I said. I then took out the Cloak of Levitation and created an armour out of Mana, which looked like Proto Saber.
"Now, show me what the so-called Fused Excalibur is made of!" I said. I then charged at Kokabiel. He blocked my slash, but that was a mistake because I used Mana Burst and sent him flying. This wasn't enough to put him down for long, as he stood up moments later and charged at me using the speed he gained from the Fused Excalibur.
Kokabiel and I continued to exchange blows. The amount of pressure that we are emitting every time our swords connect was enough to blow away those that was twenty metres away from us. Sona and the other Devils had to retreat as the Aura of the Fused Excalibur was starting to harm them. As for the none Devils such as Raynare and Asia, they withdrew just like the Devils as they knew that they were no match for Kokabiel, and they would get in my way.
"Come on, Kokabiel! You survived the fight against God! Don't tell me that this is all you've got!" I taunted. Kokabiel then used the energy of the Fused Excalibur to create a massive Light Spear. He tossed it at me, and I used Mana Burst to obliterate it.
"Ahh! You pathetic Mortal! You think you can kill me! Then let me show you what I can do!" Kokabiel said. He then used the energy he absorbed from when the Excalibur Fragment Fused. He was using some spell that I hadn't seen from the show. This was my cue to get serious. I raised my Excalibur above my head.
"Ex…" I shouted. The light energy then shot to the sky from my sword.
"The Light from Ise's sword is heart-warming…that's impossible. I can feel the holy energy coming from it, but it's not harming me," Sona said. Rias and the other Devil's had the same feeling. But Raynare had her eyes wide.
"Is that sword Excalibur? But just like Kokabiel said, that should be impossible. There is only one Excalibur in existence, and it was broken into seven pieces a long time ago. Then why is Issei calling his sword Excalibur?" Rias said.
"I don't believe it! The amount of Holy/Light energy being released from that sword is far more powerful than my father!" Raynare said. She had been around her father for a long time before she fell. So, she was familiar with how much Light her father emits. Everyone was about to contemplate on Raynare's words, but they were distracted by a shout.
"Calibur!" I shouted. Then I swung Excalibur downwards.
"No!" Kokabiel shouted as the Light of Excalibur enveloped him. He tried to protect himself, but it was pointless as the Light would destroy any protective barriers that he puts up. He was obliterated.
The moment the Light of Excalibur disappeared, one can see that the area the Light of Excalibur hit was gone. It goes as far as a few miles. The Devils, The Church Associates, Raynare and Asia didn't have words to say to the power that Excalibur demonstrated.