Ultimate Highschool DxD

After exiting the room, Issei went straight to the courtyard of he Gremory Palace. Everyone was already present there waiting for him. Even Sirzechs, Ajuka and Serafall were also here. Ravel and her Peerage were also present along with Rias and Sona's peerage. Kuroka was standing alongside Shirone as well.

When Issei arrived there, Serafall was the first one to notice him as she called out to him "Ise-kun~!". As she called out to him, everyone was made aware of his presence as they looked at him approaching. Serafall ran up to him and jumped at him. Issei caught her in his arms as he immediately pressed her lips against his. Everyone was surprised at her show of affection, especially Sona and the Satans. The girls were looking at her with jealous gazes,but she ignored them all as she continued to kiss him.

Serafall had informed everyone that she and Issei had s.e.x and wee both in love with each other. Of course this came as a surprise as she had always been a v.i.r.g.i.n for hundreds of years. And Issei was be one to take her v.i.r.g.i.n.i.t.y. Sona was surprised at her sister's boldness, but at the same time she also felt a happy.

After Serafall became Satan, she has always been busy doing her activities as a citizen. For her it was very tough due to her childlike and innocent personality and due to that Sona became the centre of her life. Sona was happy that her sister finally found someone who would love and take care of her.

When Serafall was kissing him he also didn't hesitate and returned her kiss. The kiss soon turned into a passionate one as both of them explored each other's mouths and attacked each other's tongues. After two minutes, they separated their lips and Serafall had a feel blush on her face.

"Good evening, Sera." Issei greeted her with a gentle smile on his face. Hearing her name from his mouth, the blush on her fac faded as her cheerful expression returned and she returned the greeting "Good evening, Ise-kun~. Since all of you are going o fight Loki, I thought you would need a good luck kiss for victory."

Issei felt a deep satisfaction seeing her cute behaviour as he said "Now that you gave me a kiss. No one can defeat me." Both of them laughed and walked towards everyone else.

"Issei, all of you will be sent to the wasteland where Loki has been trapped in a barrier. The moment you reach there the barrier will break and Loki will escape. I am entrusting you with the responsibility of everyone's lives. I hope you can live up to our expectations." said Sirzechs.

"We won't let you down." Issei said to him.

"I look forward to working with you." Rossweisse said as she offered a hand to Issei. Issei shook her hand as he said "If we have someone as beautiful as you by your side, Loki couldn't even hope to achieve victory."

Rossweisse had a blush on her face due to his words but she composed herself quickly. Everyone stood together side by side together waiting to be teleported.

Issei then raised his hand as a large white teleportation circle appeared below everyone. Everyone's body got covered in a white light as all of them teleported away from the palace.

....

In the wastelands at the borders of the Underworld, a large teleportation circle appeared on a hill side and from it several people figures emerged. They were the team of Issei, Rias , Sona, Ravel and their peerages along with Kuroka and Rossweisse. Everyone looked to their left and saw a green barrier made of complex magic formations. Only someone of Ajuka's power and intelligence could create suck a complex formation. Though Sirzechs is definitely stronger than Ajuka, he uses raw demonic power instead of refining it into several formations to create magic. Aside from Ajuka, only a very few including Issei are capable of such a feat.

Within the barrier, a was standing with long light blue hair floating behind him with two small bangs. He was wearing a white robe with several ceremonial makings, a blue jewel on his forehead and yellow earrings. It was the Norse Evil God of Mischief, Loki. Loki was emitting blue rags of light from his head which were repeatedly colliding with the barrier. A crack appeared on the barrier then several other cracks began appearing as the entire barrier shattered like a glass.

Issei immediately alarmed everyone" Everyone, get ready! The barrier has shattered! The fight will now begin!"

As he said that, everyone room up their stances as they all summoned their own powers. Red magic circles appeared on Rias's hands which were filled with the Demonic Power of Destruction. Similarly flames began appearing on Ravel's hands and water began surrounding Sona's hands. Akeno's outfit changed into that of a Shrine Priestess and thunder began gathering around her.

Shirone changed into her Neko form as two cat ears provided from her head and a tail appeared from her lower back. Shirone and Kuroka stood side by side as they both covered their bodies with Senjutsu. Kiba summoned his Balance Breaker, Holy Demonic Sword.

Xenovia had the Holy Sword Durandal in her hands. Irina was wielding the Holy Sword Hauteclare. After becoming an angle and Michael's Ace, she was given Hauteclare by him. A pair of white angel wings sprouted from her back and a Halo appears above her head. Both she and Xenovia were standing beside each other. Rossweisse had several magic circles surrounding her and Gasper was the using his vampiric abilities.

Everyone released their full power at the start. They didn't want any casualties, because Loki couldn't be underestimated. Even if he's evil, he is a God after all. A moment of carelessnes might result in a catastrophe.

Loki flew up to the sky and he looked around and saw everyone. When he saw Rias and Sona he began speaking "Seems the Satans are so arrogant that they have send their little sisters to fight me. I'll kill both of you along with your Peerage so that the Satans appear and then I'll kill them as well." His gaze then landed on Issei and he immediately became angry

He still remembers how Issei insulted sand humiliated him.

"You damn mortal! You're here again! This time I'll wipe of the face of the Earth! I will...."

"Could you keep it down a bit? We're not deaf. And don't you wash your teeth, your mouth stinks. Are you sure you aren't the Norse God of Garbage?"

"You!!! Enough of this! All of you're down for!" Loki then summoned several monsters and small versions of Fenrirs. The monsters began charging towards everyone.

"Everyone, let the battle begin!" as Issei said that some began charging towards the monsters on foot while some charged at them on air. Issei also flew up to the sky. The battle against Loki begins!