Issei and ruval were teleported to a made shift arena. Both fighters stood on opposite side of the stadium looking at each other with a battle hungry eyes.

In the audience were many high ranking people of the devil faction.

Rias was watching by Sirzechs and Grayfia. On the other side there was riser Phenex and Ravel phenex. Riser had no doubt that his older brother and idol would win the fight against a low class servant. Ravel was watching with a interested look on her eyes. This issei hyoudou gave Ravel a feeling she could not describe but for now she set those feeling to the side and watch the fight.

Rias peerage members were watching with sona sitri and tsubaki shinra on a television screen together with other high class devils. There was also a other individual with them. He had black hair violet eyes and very good physique. He watches the fight with great interest.

(Arena)

In the arena ruval and Issei stared at each other. Waiting for the match to begin. Sirsech voice was heard.

"Ladies and gentlemen, right now you are about to witness the battle between Ruval phenex and issei Hyoudou the red dragon emperor and pawn of Rias Gremory. Let this battle commence."

After sirzechs little speech both fighters unfolded their wings. Out of ruval came 2 orange wings of fire looking very majestic. Put of issei came 2 dragon wings. They were black from outside and dark red in the inside. Out of issei came 2 horns that were black and a black tail with a red tip. Issei did not wanted to reveal his tentacles for now.

Both fighters launched at each other with blinding speed. Almost all high ranking devils only saw red/black and orange blurs.

Issei and ruval traded punches and kicks with each other. Both fighters block their opponent attack. This lasted for a good minute until both fighters realize that this is going nowhere.

Both landed a few masters from each other. Most of their clothes were torn of. Some females were blushing at the powerful fighters physique.

Issei decided to not waste time and yelled. "Crimson curse field". Moments later the arena was surrounded in a crimson and black coloured flame.

Ruval noticed that his wings were slowly losing their flames. He knew he couldn't stay in this field for long and need to do something quickly.

He gathered his phenex fire around his body. Moments later he dashed at issei who was standing still waiting for ruval to strike. He dashed at issei with his body covered in orange fire.

Issei smirk and quickly did the same. He covered himself with black and red fire. ruval punched issei with his fist covered in orange flames resulting in a explosion.

When the explosion was cleared they saw a giant crator with ruval and Issei both in it on the floor. While issei protected himself he didn't protect himself from the explosion.

Both issei and ruval started to stand up.

Both of their bodies had bruises and scratch marks. They looked at each other and smirked. They were enjoying the fight. Both fighters charged at each other again with blinding speed. The crowd were in awe. Ruval was considered the strongest phenex to be ever born and to see that he had a hard time against a low class servant.

(Observatory room)

"Very interesting, your servant Rias fight on par with ruval and he hasn't used his sacred once." Noted sirzechs making the people present widen their eyes. He was right, issei is the red dragon emperor but he hasn't used his sacred once meaning he base strength is in the ultimate level.

"Yes your pawn is immensely powerful Rias dear." Said a woman with short brown hair and violet eyes. She wore a beautiful dress that showed a well amour of her cleavage that easily surpasses Rias and akeno.

"yes but how? I never trained him to be this powerful." She said making the people present raise an eyebrow.

"Maybe he had a strong reason to be stronger." Grayfia said making Rias cringe. She knew her lie was out.

Grayfia was watching the fight with great interest. Issei had shown her that he could bring back her younger sister from the shell she had created around herself. His power and personality were proof enough. She smiled brightly something sirzechs noted. This was unusually for his wife when in public.

Grayfia spotted him staring and mouthed later making Sirzechs nod.

(Arena)

Issei and ruval were trading pushes and kicks again. Ruval knew because issei is a dragon he is immune to fire so he needs to outlast him in stamina.

Ddraig said mentally making issei nod.

Issei threw a punch at ruval who easily dodge it. He return the punch but to his surprise issei caught his fist and quickly gave a punch right to his face making him fall in the center of the stadium.

Issei quickly raised his left hand and aimed at ruval who was trying to stand up. He quickly changed.

I am he who slays and captures gods.

I am the one who knows the end and the founder of genesis

Return thyself to the cycle of providence

The five elements to elements

And sever the links woven between images and truth

Now all of creation shall perish here

At the distant ends of the void

Extinction Ray

While chanting a blacks and orange magic circle started to form from his hand. The magic circle started to expand and out of it came a white beam shot out that headed straight to ruval who just got up.

He was blinded by a white light. Issei attack was so strong it penetrated through the arena wall

(Observatory room)

"An extinction Ray!!" Sirzechs said in shock.

"What is that brother?" Asked Rias. She was in awe but also fear. She knew well that issei is way stronger than her.

"it is a very powerful black magic that even could harm gods. It shoots a beam of very concentrated destructive magic that makes everything what it touches to atoms." Informed sirzechs making the people present shocked.

"Is that not dangerous. What if ruval has died?" asked Venelana Gremory.

"Don't worry, the extinction Ray is a very dangerous spell but ruval is still a phenex." Informed sirzechs making the people present sign in relief.

(Arena)

After issei used his spell he landed on the ground and hoped his attack was enough to beat ruval. He knew that ruval was powerful and he was sure he would survive the attack. He deliberately aimed a bit to the side to make side he did not accidentally kill him. He was proven right when he felt his aura rise from the crator.

When the smoke was gone ruval was standing in the crator breathing heavily and his wounds were healed by his phenex regeneration. He gave issei a small grin.

Issei saw this and retracted his wings. Ruval on the other unfolded his wings but to everyone surprise that his normally orange coloured wings changed to a azure blue. His eyes shined blue as well and the temperature around his increased immensely. Issei was in awe of the raw power and couldn't wait to fight it.

"You have my thanks issei hyoudou. I was planning to safe this form for when I challenge a maou but It has appeared that you are powerful enough to make me use it. I will not hold back anymore. You will face the AZURE PHENEX" he yelled the last part and his power kept rising.

Issei grinned at this with battle hungry expression. He dashed towards ruval and the latter did the same. When they exchanged punches and kicks, I noticed that he was faster than his normal self.

Eventually ruval broke through issei defences and delivered a right hook that forced issei to the ground with a explosion. Ruval was not finished yet and launched a giant blue fire ball at issei who was trying to get up.

Ddraig warned and issei was met with blinding blue light. Quickly thinking he summened the boosted gear and muttered "balance breaker"

The fire ball hit and a large explosion was soon heard afterwards.

(Observatory room)

"It has appear that your pawn had lost Rias." Layla phenex said.

"No, this can't be happening." Rias said with a face full of despair.

"As expected of my big brother, that low class brat didn't stood a chance." Said riser Phenex pridefully. His peerage except ravel were agreeing with him.

"Don't celebrate to early riser." Sirzechs said with a smirk.

"What do you mean lucifer-sama, the battle is decided. My brother is victorious." Riser said making all people look at sirzechs who was smiling.

"I don't think so." He said and pointed back at screen everybody looked and to their confusion only smoke was seen but then they heard something that shocked then greatly.

(Arena)

Ruval who was still flying in the air was suddenly pushed back by a wave of pure power. When the smoke was cleared there was issei standing in a large crator. He wore the famous red dragon emperor armor and it radiated pure power.

(Observatory room)

"The forbidden infernal form!" Sirzechs said in awe. Grayfia who was watching was smiling widely and had no doubt that issei could bring back her sister from the shell created around herself. Everybody present was shock to see the low class devil in the famous armor.

"When did he achieved that?" Said Rias out loud making the adult look at her weirdly.

"What do you mean Rias?" Venelana asked making Rias gulp. But before she answered sirzechs intervened.

"Let's continue this argument an other time. For now let's continue watching this fight." Sirzechs said making both women nod and look back at the fight.

(Arena)

Issei and ruval stared at each other with the biggest battle hungry expression they could muster. They launched at each other. Every time they connected with each other shockwaves that made crack on the arena were seen. All the devils were in awe and in interest of the 2 powerful individuals strength.

After a minute issei started to overpower ruval and pushed him back.

'Damn that regeneration is annoying. Hey guys how do I deal with someone like this?' He mentally asked his dragons.

Ddraig said making issei nod in thanks. He was now blocking the attacks and was able to create a good distance between them.

"Are you scared Red dragon emperor?" Ruval mocked making issei smirk.

"Keep dreaming ruval." He said and started to gather his power. "DO IT!"

The gear yelled and issei started to gather the power on his left hand.

"DRAGON BLASTER"

issei yelled and the stored blasted a green plasma beam to ruval who was to late to dodge and was hit straight to the face. The blast was so strong that the red of the arena was destroyed in the progress.

When the smoke started to disappear. The only things were left was a couple of rubble and ruval unconscious body floating in the air.

Issei who was still in his balance breaker form took a big breath in relief and waited for the people to teleport them.

Ruval phenex has retired, issei hydouou pawn of Rias Gremory is the winner.

Sirzechs voices was heard both issei and ruval were teleported out of the arena or whatever was left of it.

(Observatory room)

Everybody in the observatory room was quiet. The phenex family were the most shocked.

"How can ruval loose?" Riser said in shock making his parents look at him.

"It is simple riser, there are people stronger than ruval. Issei has proven that he is one of those people. You always thought that the phenex regeneration was unmatched but that is not true. I hope you finally learned your lesson and from this day forth take your training seriously." Lady phenex said making riser nod slightly.

Ravel who was standing next to riser looked back at her mother. She was now very curious about this issei guy and wanted to learn more.

"I think we should go, come riser and Ravel we are going home." Lord phenex stated making both children nod and walked to their parents and were teleported away.

Right after they teleported away, the door opened and revealed Rias peerage and sona and tsubaki. Everybody looked at Rias with a happy smile.

After a minute the doors opened and a guard came in with issei who's clothes were torn. The younger devils blushed at his good physique.

"Ah issei-kun, that was a spectacular fight we just witnessed." Sirzechs said making issei nod and bow before the devil king. Issei knew well that he couldn't defeat him unless going juggernaut drive.

"Your words are to kind Lucifer-sama." Issei said with respect but also emotionless tone. Making the adults raise an eyebrow. The only one that didn't was Grayfia and she can understand his distant attitude towards the Gremory family.

"Very well, a deal is a deal and Rias Gremory is free to marry who ever she pleases." Sirzechs said and Rias went to hug him but to everyone surprise except Grayfia again that issei held his arm out in a way that said 'personal space'

"That is good to hear. I am going home, good night." He said and turned around and walked away. Before he left the room he looked at Grayfia and gave her a smirk. She returned it with a smile and then he left leaving the other people present uneasy at his coldness.

"What a shame, I wanted to talk with him and know him a little more." Said venelana Gremory while Lord Gremory nodded in agreement.

"Yes, truly a shame." Said Lord Gremory.

"Master, Lord and lady Gremory I need to inform you 3 about something important." Grayfia said making the adults nod and sirzechs turned towards the younger devils and said.

"all of you can go home now." He said and all younger devils nodded and went their separate ways.

(5 minutes later Gremory mansion)

Currently in the dining room of the Gremory mansion were only Sirzechs, Lord and lady Gremory and Grayfia. She requested this meeting to inform the older devils of Rias actions.

"So what is what you want to talk about dear?" Sirzechs said and was rewarded with an earpull from his wife making the other 2 devils laugh at the devils king misery. After the ear pull sirzechs rubbed his sore cheek and Grayfia gave a serious face making all the devils present shiver for a second.

"What I am about to tell you is very important. Issei hyoudou, pawn of Rias Gremory was originally planning not to attend this wedding and was letting Rias marry riser." Grayfia said and this made both male devils shock and soon angry. Venelana was slightly angry but she noticed the distant attitude between Rias and Issei.

Both male devils were leaking their aura's making the building shake. But that was soon stopped by the cold aura of Grayfia who's eyes were shining a deep color silver that was last seen in the civil war. Sirzechs and Lord Gremory shivered at the strongest queen cold stare.

"And why would Rias own servant don't want to help her especially when she needed It the most?" Said sirzechs in a calmer voice not wanted to make his wife more angry.

"It is simple. The way Rias recruited issei is the reason for their not so stable master and servant relationship." Grayfia said making all the adult raise and eyebrow.

"What do you mean grayfia? Rias told all of us that she founded the red dragon emperor in the same school she was attending and asked him to join her peerage and he accepted it." Said venelana. Lord Gremory took a sip of wine in the progress.

"That was a Lie, she let issei die by the hands of the fallen Angel that was in her territory and knew about her plans to kill issei. She let that happen and gave issei a summing circle before the date started and when he died she resurrected him into a loyal piece." Grayfia Said making all adult shock. Lord Gremory spitted out the wine he just drank. Sirzechs and venelana were in the same boat.

"W-what?" That we the only thing sirzechs could mutter out.

"You heard me right master." She stated in her usual stoic voice making it crystal clear that this is not a joke. The older devils present were in a state in shock but luckily venelana was the first to recover.

"Why would Rias do that to a human?"

Venelana asked

"I would assume that she got desperate with the hole riser situation and didn't want to risk of issei refusing her offer to become a devil." Grayfia assumed making the other devils here nod in understanding.

"But why did issei crashed the wedding party?" Lord Gremory asked making Grayfia sigh.

"I made a deal with issei. If he crashed the wedding party and help Rias with getting out of her engagement with riser and that he helps bring back Esdeath from her current shell, I will help him become high ranking devil." Grayfia said making all devils present shock. They all knew Esdeath very well especially venelana who was Esdeath adoptive mother and mentor after the great war.

When the great war ended the parents of Euclid, Grayfia and Esdeath who was 6 years old at the time died in the battle leaving the Lucifuge children alone. Euclid took the role as head of the Lucifuge clan while both Grayfia and Esdeath went to the Gremory clan and stayed there.

In that time Grayfia fell in love with Sirzechs and Esdeath was raised by both Venelana and Lord Gremory. Both considered Grayfia and Esdeath as their daughter before Rias. When the civil war came Grayfia and Esdeath were given a chose to join the old or anti satan faction.

Grayfia joined the anti satan faction because of her love for sirzechs. Esdeath joined the old satan faction because of her pride as a Lucifuge. She joined her brother and was one of the generals in the armies of the old satan faction and was giving the title:

Queen of ice

Then the battle between Euclid and Esdeath against Sirzechs and Grayfia came and the accidental death of Euclid that made Esdeath in a broken state.

"Are you insane Grayfia?!! Sending that boy to her." Sirzechs said but that was a huge mistake. Grayfia eyes shined a beautiful but dangerous silver that promised true hell.