Kokabiel: Lets have a war, sister of Devil King Sirzechs Lucifer, Rias Gremory!
The leader class fallen angel then made a magic circle that launched dozens of light spears at the group. Rias, Sona, and Akeno made barriers to protect them but dust still filled the air and when it cleared the fallen angel was no where to be seen.
IsseI: Where did he go!?
The one who answered him was a loli
Koneko: He went that way.
She pointed towards the academy
Koneko: Toward Kouh Academy...
All of them gathered at the edge of the cliff.
Issei: Those guys are really going to destroy the academy...
Sona went to speak but was interrupted by a familiar voice
Sebas: No. They said that they would start there. A leader-class fallen angel could destroy this entire town with a single light spear. You should count on the fact that he will do that.
They turned around and saw Sebastian Sitri in all of his glory.
Sona: Brother you have returned.
He nodded before stepping up next to Issei
Sebas: He will destroy this town without a second thought. Your parents and all of your non-supernatural friends will die. Will you allow that?
The weakest red dragon emperor trembled with rage.
Issei: How dare he! How dare he think that can get away with this!
His master placed a hand on his shoulder. Issei looked at her and noticed her expression
Rias: We wont allow him, Issei. We will work together and bring that war mongering crow to his knees.
The rest of them had similar outlooks on this situation and they teleported to Kouh academy to begin preparations for the attack.
Aizen on the other hand chuckled at how quick Rias changed after she was saved by Issei. She always does think of herself as a princess so Issei is like her knight in shining armor. Aizen has already though about what would happen if Issei somehow learned that Rias is the reason he died in the first place.
In the end he decided against it. After all he will die soon anyway. There is no need to torture the perverted fool like that anyway. After all Aizen is a kind man.
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Now at the famous Kouh Academy both peerages and Xenovia got to work on making sure of two things. The first was that they would be ready for the fight and the second was to make sure that no bystander was caught in the fight.
Of course this was not actually going to be a fight. While Kokabiel is the weakest Cadre he still is one. Meaning that he has the power to back up and can destroy this entire town. Against that power both of them and their peerages will be easily killed if he goes all out.
Though that is pathetic to someone like Aizen who can blow up a planet with a single Fragor and possibly the universe if he has enough time to charge it with his infinite power. That is why only the likes of Great Red, Ophis, Trihexa, Tiamat, and Gilgamesh can defeat him.
Aizen decided not to fight in this battle and went with Sona to make the barrier. After all he is not going to let some crow throw him around just so he can keep the cover of only having the strength of a high-class devil. So yeah, making a barrier is what he is doing.
As they were setting it up the only man in Sonas peerage asked Aizen a question.
Saji: Hey Sebastian. Why do you have no peerage members? If you do not mind me asking.
All of the other members of sona's peerage payed close attention. As they to wanted to know why. Aizen acted like he was thinking before he replied.
Sebas: I just do not like the system. It feels like slavery to me.
You know now that they think about it...
Sona: That is my brother for you... The kindest of us all. Wouldn't hurt a fly some say.
Her peerage agreed with that. It is not slavery. Sebas is just to nice.
Finally the enemies arrived which consisted of the Fallen Angel Kokabiel and both of the insane priests. One is just a doctor and the other is a wannabe swordsmen. You know its not a good look when both of your subordinates are mentally insane. It makes it seem like you are the bad guy. Which you are.
The man named Valper Galilei brought out a machine that would fuse the Excalibur pieces that are present into one blade that they would then use to in the war they wish to create. Rias and her servants knew that they would certainly lose if the man succeeded
Though Aizen can not believe the idiocy of these fools. He knew about Kokabiel's plan for years now but knew he would do something stupid like this. This why the mentally unstable never win. After all, who in their right mind would start a battle before their weapon is even complete? And to do it right in front of your enemies just shows their foolishness.
The battle started with the fallen summoning 2 Cerberus to fight the gremory group. As Rias, Akeno and Koneko moved to fight the first Cerberus, the second one jumped at Issei to attack him only for Xenovia to slay it with Excalibur Destruction.
Issei used his Gift ability to increase Rias and Akeno's powers who used it against the first Cerebus as Kiba came and restrained its movements with his demon swords before the Cerebus died from the onslaught of Rias and Akeno's demonic powers.
Rias then attacked the fallen angel in the sky but he merely shrugged it off and continued to stay in the sky and do nothing as his subordinates are defeated. What a great leader.
Valper was finally able to fuse 4 of the Excalibur into a single sword. Freed then used the blade to challenge the gremory group. Kiba and Xenovia teamed up to fight Freed while Valper mocked Kiba about his past friends and how he used them as lab rats.
He then tossed the last Light Container at Kiba. As Kiba grieved the lose of his comrades, their sprits emerged from the container and encouraged their only living friend. Kiba then absorbed the light container and was able to achieve his balance breaker; Sword of Betrayer, which allowed him to make holy demonic swords.
This should not be possible but Aizen knows that because the creator no longer has complete control over the system things like this can happen. Another show of incompetency in Aizens eyes.
Now with his balance breaker in hand Kiba is able to fight on par with Freed and his weapon. Xenovia decided that she would use her true weapon that she was born with a affinity to use, Durandal. Using it she was able to shatter the fused Excalibur, with Kiba defeating Freed after further shattering the Excalibur.
After Kokabiel killed Valper after he figured out that the biblical god was dead, he mocked the gremory group and the battle continued. After they were not able to do any significant damage to him he chided them and revealed that it was not just the 4 Great Satans that died in the great war but their creator as well.
Everyone was shocked by the revelation, as Asia even lost consciousness due to shock. With the majority of the group in despair, Issei was determined to keep fighting, as his determination was able to rally the others to fight as well.
Rias in some weird way of encouraging her pawn she offered her body to him by saying that he could suck on her breast. Issei then was able to use his latent desire and power himself up with the boosted gear as Aizen originally wanted him to. To bad he already lost interest.
But before any of that could happen the barrier that they had set up around the school was broken by a figure made out of darkness. This being is Tobio Ikuse, who is faking the use of his balance breaker to make it seem like he needs to use it to take down a leader-class being.
Kokabiel: Slash Dog!? Do not tell me that Azazel paid you to take me down!?
The being did not answer him and he appeared behind the crow and summoned his all-cutting-scythe and cut of all of the crows wings.
Tobio: I am a bounty hunter. Why else would I be here?
His voice is distorted thanks to the shadows that surround him. He then hit the fallen angel in the head using a good amount of strength which nocked out the bird and sent him to the ground. Then without even speaking to the bystanders he formed a magic circle and teleported away with Kokabiel.
Issei: Who was that bastard!? He stopped me from reaching heaven!?
Rias on the other hand knows exactly who that is.
Rias: He is man that goes by the titles [Slash Dog]. He is the most famous and trust worthy bounty hunter than the factions have ever seen. He has completed every task given to him and is the reason that most strays never make it to far away from where they begin. He is also the wielder of the Longinus [Canis Lykaon] and is said to be its strongest user.
The host of the dragon did not care that much for all of that information thanks to the very little he knows of the supernatural. While the red dragon himself understands the significance of this information. Of how strong this being is. Its just to bad that his host is so terrible. Otherwise he would enjoy a battle with Slash dog. Like any other dragon.
With everything over both of the groups got to work on rebuilding the damage to the area and making sure that everything is alright. While Aizen himself is genuinely happy that this is almost all over. Soon he will not need to put up this act and wear this retched skin suit.
Soon he will claim the position that he will undoubtedly have. He will be...
The One Above All