Answers to reviews:

FailedKeikaku: You clearly are one of those that just hates Rias. Not that there's anything wrong with that. Everyone's got their opinions on characters.

Exodus12345: Kuroka is in the harem. And Damian didn't beat Koneko up, he merely twisted her arm and threw her into Rias and Issei. He knows she's Kuroka's sister, so he didn't aim for the kill.

OechsnerC: Thanks.

AnimeGoji91: Wow...

Perseus12: Yep.

Ryu Otsutsuki: Hmm...

Disclaimer: I do not own High School DxD. I only own the OC Damian Mammon-Lucifer.

"Kokabiel... I should've known you'd make your move." Damian muttered to himself as he stood somwhere close to Kuoh Academy, right outside a barrier that would do nothing to keep him out. He was watching the Gremory peerage take on Kokabiel and shook his head at the display.

It was pathetic really. Did they really think they could go up against a Fallen Angel like Kokabiel? Someone who only the likes of Damian, Sirzechs, Serafall and Super Devils could take on?

A few weeks have passed since Damian came here and got Raynare and Kalawarner, to which he brought them to Azazel and Azazel put them under his watch. So now the grandson of Lucifer had to deal with two Fallen Angels and a lusty Nekomata that really wants to have sex with him from the way she flaunts her body and makes not-so-very-subtle hints at sex.

The two Fallen Angels did flirt with him and occasionally walked around naked or he found them in his bed naked, trying to seduce him, but he told them he didn't just sleep with willing and offering strangers, not anymore.

Damian had been keeping an eye on things in Kuoh City, especially on the Devils in that territory. He never liked the fact that Sirzechs managed to convince Yasaka and the Shinto Gods to allow the Devils to rent that territory. In his opinion, they have the Underworld so they should stick to it. In his watch, he's discovered quite a few... interesting things.

First, Rias tried to give her virginity to her pawn to get out of her marriage contract, a rather desperate and pathetic move in Damian's opinion. The girl isn't even trained to be in the same level as her brother so she's worthless to fight her way out of this contract. It didn't matter whether she had her virginity or not, Devils were greedy and Riser Phenex would still marry Rias, even if he couldn't take her purity for himself. It all led to a simple conclusion for Damian.

Rias Gremory... is a weakling that could be killed with the flick of a hand in Damian's opinion.

However, Damian has noticed things happening a lot around this town, so he's decided to investigate and learned of Kokabiel's attempt to restart the Great War.

However, he was contemplating his next action. Killing someone like Kokabiel will spread, and will reach the Three Factions themselves, which means the Devils, the Four Satans will know of his return.

"Oh fuck it." Damian muttered.

Kuoh Academy

"ISSEI!" Rias shouted as she slid along the floor and caught her pawn Issei Hyoudou before he could hit the ground, cradling his head in her lap as he tried to catch his breath.

"Rias." He winced out as she cupped his face and looked around on the battlefield. All her peerage members were current down and out for the count. Her Knight Kiba Yuuto, Bishop Asia and Rook Koneko Toujo were unconscious to her left with her wounded Queen, Akeno Himejima standing protectively in front of them.

To her right the church follower Irina was out for the count while Xenovia was barely standing and using the Durrandal to keep herself up right. Looking behind her she looked towards Sona and her peerage and could see the sweat along their foreheads. They would not be able to keep the barrier up for much longer.

"Stay behind me, President." Her pawn told her as he shakily stood back up and the gem on his boosted gear glowed.

"No Issei, your not strong enough." She said grabbing his arm tightly. "You'll die in your current state."

In front of her the Fallen Angel Kokabiel was laughing as he began listing reasons why he would not fall and how he would make their deaths as painful as possible.

"Stay with me, Issei. Stay with me," Rias whispered to her pawn as she held her arms around Issei protectively, daring the fallen angel to make a move.

"Time to die Gremory," Kokabiel called out as light weapons appeared all around him. All Rias could do was gulp an grip Issei even more. It was times like this that she wished she was not so weak. Why she couldn't be more like her brother and sister-in-law.

Suddenly a blur of some kind struck Kokabiel and sent him crashing into the ground below.

"WHAT?!" Kokabiel shouted as he got back to his feet. "Who dares disrupt my fight?!"

"Fight Kokabiel? This is bad comedy." A voice said before a blast of fire shot forward and sailed towards Kokabiel. The Fallen angel deflected it with a light shield but was unaware of the spear made of fire that was thrown towards him until it buried itself into his shoulder, knocking him back and putting him on one knee.

"WHO DARES?!" Kokabiel shouted.

"I dare!"

All eyes turned to see Damian. Well, the Devils only saw his back. He was dressed in a faded black, 3/4-length, hooded leather coat with red interior linings and the British Union flag sewn on the left arm, a gray tank top, black fingerless gloves, black faded jeans and black military boots. He also had Mortem in hand.

"Y-You!" Kokabiel said as he backed up a step.

"Me." Damian said as he walked forward. "You have been a thorn for too long, Kokabiel. It's time someone puts you down like the mad dog you are."

"Fool. Who do you think you're talking to!" Kokabiel shouted as light swords began appearing all around, all easily as big as cars and made the young Devils all gulp when they saw therm. The swords could kill them at any moment.

George though simple shook his head before he decided to show this fallen angel what real power was as he released part of his power.

The moment he did, anyone that was remaining to stand suddenly dropped to the ground as a pressure that one had ever felt before suddenly slammed into them and kept them pinned. Even on the rooftops, Sona and her peerage dropped to the ground, releasing the barrier unintentionally.

Kokabiel though had began to sweat, barely able to stand up from the weight of this man's demonic pressure.

In the blink of an eye, Damian appeared before Kokabiel and backhanded him hard, sending him flying and bouncing across the battlefield. Damian walked forward before he leaped, sword in hand and brought it down right into Kokabiel's chest, causing the Fallen Angel to scream in pain as Damian dug the sword deeper into his chest before ripping it out, spraying blood everywhere.

Damian gripped Kokabiel by the hair with one hand, reared his sword back before he swung it and decapitated Kokabiel in one clean swing. Damian looked at the head before he dropped it and shot a blast of fire at the body and head, incinerating it.

Just to make sure nobody tries bringing the bastard back through Necromancy or something like that.

Everyone who was watching which was Rias, Issei, Akeno, Xenovia, Sona and her peerage all stared at the man in sheer amazement for being able to defeat such a powerful Fallen Angel so quickly. While they may have been fighting him beforehand, it was not like they did much too even wound the Fallen one.

After a moment, they watched the man turn his head towards them ever so slightly before he turned it around just as quickly and released the pressure of his demonic energy.

Everyone who was down on the ground finally felt the weight lift from their bodies and could finally breathe easy again as the temperature began returning back to normal.

Before they could say anything, their eyes widened as a pair of red demon wings sprouted from the man's back. Not the bat-like wings Devils normally have, these looked like pure demonic wings. With a single flap, the man took off into the air.

"Rias... who the hell was that?" Sona asked as she came to stand next to her friend.

"I... I don't know." Rias shook her head. "But those wings, they... they looked familiar."

"Yes, I'm certain I've seen them before..." Sona said, narrowing her eyes.

And that's it for this chapter folks. I think I'll leave it here.