Soul King(DxD)

Phoenix 13

 Issei: Riser!

 There he is, the Phenex everyone waited to fight, the same haughty look he always carried on his face, but now there was a hint of anger in that expression. Of course, he is simply losing all his pieces, including his favorite, without being able to harm his opponent in any way. So many pieces were sacrificed to not be able to take one of Rias.

 The whole group was there, on top of the school building and ready to start the fight against the last the king. What a tense atmosphere spread through the place, the last fight is ready to begin.

 Rias: Give up, Riser! You are at a complete disadvantage, Y/N is already dealing with your remaining pieces.

 Riser: Give up? I'm from the Phenex, I carry this on my back, I've already told you I won't tarnish that name by your foolish whims.

 Issei: Seeking romantic freedom is no foolish whim, you roast chicken! We all have the right to choose who to love.

 Riser: Shut up Rias' pawn, the noble blood of the devils is at stake now. This is not something a simple reincarnated as you should meddle with!

 Issei: I don't care about that nobility shit! If something makes the president sad then I won't accept it! Even if I have to defeat god, it will be done!

 Boost!

 And it was right, the amount of boost he got was enough to reach the power he got in that training. Now it's time to show this roast chicken the consequences of giving Rias such a headache.

 Issei: Ddraig! Great red dragon Emperor, the one with the power to defeat even god, lend me your strength and show the Phenex the power of dragons!

 Explosion!

 The red aura exploded in Issei's body, the greatest amount of boost he could muster in his body right now, the limit of power he could use at that moment. The release was strong enough to cause a wave of wind to catch everyone, even Riser put an arm to his face in protection.

 Issei trained for this moment, he remembers every lesson he received from Y/N when they started the personal training...

 *Flashback*

 Y/N: Issei, before starting your training I want to tell you a story about the dragons of the great war.

 Issei: Dragons of the Great War? I know that was when the three factions allied to defeat the two celestial dragons, correct?

 Y/N: Exactly, but let me tell you. A long time ago there was a mighty red dragon with flames so powerful that they could incinerate all creation, including gods. This dragon is called Ddraig, one of the most powerful beings in existence, and also one of the most powerful dragons below only to the dragon gods.

 Issei: Dragon gods? They never told anything me about it.

 Y/N: The Dragon Ouroboros, Ophis, Dragon of Infinity. And also The Dragon of Dreams, Great Red. They are the most powerful beings that exist in this world, above god, above satan, above all others. The celestial dragons that are below them, even so, remain beings of great power, Ddraig being so powerful had no one who could match him, until he met his counterpart, Albion, immune to his flames and equal to him in terms of power. In one of the battles between the dragons, they were interrupted by the 3 factions that had allied to prevent the destruction caused by them from continuing. Even though the two teamed up to attack the leaders of each faction, they had their bodies destroyed and their souls sealed on two different sacred gears. Albion became Divine Dividing, while Ddraig became Boosted Gear.