Answers to reviews:

Guest: He won't have a peerage. He's a Nephalem, not a Devil. i doubt it would work.

Sheploo: Yep.

Disclaimer: I do not own high School DxD, only the OC.


Katerea was unable to say anything or attempt an attack because Damian had suddenly appeared in front of her in the blink of an eye, shocking the busty woman at his speed, before she got a backhand that sent her flying and rolling across the field. Damian spread his wings and flew at Katerea.

Katerea pushed herself to her feet then put her staff in front of her and four magic seals appeared around it. Blasts of energy shot out, each think and potent with dark magic.

With his wings, Damian easily avoided the attacks and even kicked one which was sent high into the air and causing a small explosion of darkness to cover the sky for a brief moment.

"Damian Mammon…..DAMN YOU!" Katerea shouted as her staff was thrusted forward again as four more magic seals appeared.

Damian whipped out Luce and Ombra and fired, causing Katerea to lose concentration on her attack as she had to move out the way to avoid the bullets. Damian put his guns away before he flew down and delivered a punch to her face, sending blood flying, then he gave her a headbutt, causing her to scream as she backed off.

"You... BASTARD!" Katerea screamed at one of the men responsible for her family's downfall.

Damian just smirked as fire started dancing along his arms before completely covering them, making his arms look like they were made of fire. he then launched himself at Katerea, who's eyes widened as she raised her staff to put up defence seals but was too late as Damian drove his fist right into her cheek, sending her flying again and crashing through the window of one of the Kuoh Academy buildings, though this time she'll have a very bad burn mark on her face.

Damian flew over and pulled Katerea out then placed his fire-covered hand against Katerea's face and started burning her, causing her to let out blood curling screams as she was burned. While the younger Devils winced and had to look way, the older Devils and the other leaders of the other faction remained stoic, not showing any emotion to the brutal attack, having seen Damian do far worse.

Damian stopped his torture and walked away before he summoned a spear made completely out of darkness then sent it flying back without looking, causing a massive explosion that consumed the building and probably Katerea inside.

He looked towards the group and saw Serafall looking like she was about to run to him when he felt a sudden pike of power and turned back to where he had thought he had finished off Katerea. His eyes narrowed as he watched the descendant of Leviathan limp out.

The once beautiful devil now had half of her hair burnt off along with multiples burns and wounds covering her arms, legs and stomach. Her clothes had been burnt off leaving her naked for the world to see. Her face though was contorted into a mixture of pain and anger as her eyes were wide with an insane look in them.

"You will not take this from me." She rasped out. "I will take my place as Queen of the Underworld and you will bow to me."

After that she made a small jar appear in her right hand that was covered in Devil runes and sealed. She waved her hand and quickly made them disappeared before ripping the lid of the top.

Damian watched with narrowed eyes as purple like snake figures wriggled out of the jar and began leaching and absorbing itself to Katerea who had a wide smirk on her face.

The snakes began to glow with an orangey glow around them as began to meld with Katerea and he watched as her body began to change and alter itself. Her arms became long and more tentacles like while her hair and face features became more wild. Her breasts even got larger and her body became more toned. The most noticeable difference though was her power level had jumped again.

Walking forward towards her, Damian heard her begin to laugh before a powerful beam of energy shot out from her mouth, breasts and the tip of the tentacles.

Damian sighed and rolled his neck and shoulders before he summoned a Light spear in one hand, a darkness spear in the other before he held them together to fuse them into a light-darkness spear and then threw it at the beams that were coming towards him. The spear made contact with the beams and made a massive explosion that caused the spectators to cover their eyes from the intense blinding light.

Once the smoke died away, Damian saw Katerea racing towards him with her wings stretched out wide.

Damian just whipped out Luce and fired off a single holy light bullet, getting Katerea in her right hand. Since she was a Devil, the holy bullet really hurt her and made her scream as she fell down, rolling to a stop at Damian's feet. She looked at her now missing right hand that gushed of blood and she screamed in pain as she held the missing limb.

Damian holstered his gun and unsheathed Mortem before he grabbed Katerea by the neck and made her look at him. he said nothing as he raised Mortem before he brought it down several times until Katerea's body hit the ground and Mortem's blade was covered in her blood.

Damian flicked the sword and sent her blood off his blade before he sheathed it then started walking away, a spectral black spear appearing over his right shoulder before it went flying at Katerea's corpse and exploded on impact, leaving nothing remaining of Katerea's body.

'What power...' Sona thought as she watched. 'He took on Katerea Leviathan herself and barely broke a sweat!'

She had of course read the stories and legends on the power of Damian Mammon, the Nephalem, the son of the Angel of Death himself. From what she had seen, his power in the stories were paling in comparison to what she had just witnessed, and she had a feeling Damian wasn't even going all out.

Her parents had told her all about Damian Mammon including the real reason he left. It had left her with a very cold outlook on the Gremory family and Sirzechs. She did not believe that Sirzechs and Grayfia, two people that in a way were like a brother and sister to her like Serafall was could ever do such thing. Her respect for the two Devils had taken a very large blow.

In terms of the power of Damian Mammon, she readily agreed with what her parents told her. If Damian went all out at his full power, he could destroy all of Japan many times over with plenty of power to spare.

It was frightening power.

Damian, who was about to head over to the group of leaders, noticed another battle taking place and narrowed his eyes before he spread his wings and took to the sky to witness this.

Flying over, he saw two boys on the ground around the same age glaring at one another. One was the Sekiryuutai he had saw during the Kokabiel incident and the other he guessed was the Hakuryuu with the glowing blue and white wings on his back.

Damian's eyes narrowed tough when he figured this was Vali Lucifer, the boy Kuroka had told him about.

Dropping down to the ground he walked at a steady pace towards the duo and watched as Rias Gremory and her peerage appeared behind the Sekiryuutai.

"Give up Vali its over," Issei told him as he took deep breathes and looked on the verge of passing out as a bracelet around his wrist broke into multiple pieces. Meanwhile Vali steadily stood up as he entered his balance breaker mode again without the helmet forming.

He was about to attack Issei making the Gremory peerage ready themselves. However behind Vali, Bikou appeared and dropped out of a tree with his staffs on his shoulder.

"What bring you here Bikou?" Vali asked.

"They want you back. Apparently they want you for some fight that will take place up north."

"Hey, who the hell are you?!" Issei shouted out as he stood back on his feet and let his gauntlet appeared back on his hand.

"Issei be careful. You have used up a lot of energy today." Rias told him but the brown haired boy's focus was entirely on the two members of the Khaos Brigade.

"His name is Bikou, descendant of Sun Wukong." Damian stated, letting himself be known as everyone turned to look towards him. They all saw Bikou take a step back in fear while Rias had gone pale with her eyes widening in shock.

"Damian Mammon," she said aloud making everyone else gulp and realize who he was. They had all been told he was the one who saved them and Rias could not believe she had been speaking to one of the great heroes and most beings in the world.

"We need to go," Bikou said to Vali grabbing his shoulder as a magic seal appeared beneath them. Vali though had a look of excitement appear on his face at the prospect of facing Damian as the he and Bikou began to sink into the seal.

"Vali Lucifer..." Damian suddenly said, causing Vali to narrow his eyes. "I'll remember that name when I destroy another piece of Old Satan trash."

Vali looked like he was about to speak but both he and Bikou completely disappeared, leaving the Gremory peerage and Damian behind looking at the spot where Vali and Bikou had previously been standing.

"Pathetic." Damian muttered before he glanced at the Gremory peerage who were looking at him with wide eyes. "Are you kids alright?"

They quietly nodded their heads.

Being the first one to snap out of their shock, Rias quickly bowed to Naruto. "Thank you, Lord Mammon. For both saving my peerage and I In this situation and from the attack two weeks ago."

"Don't mention it." Damian waved her off. "Someone had to put Kokabiel down. It's been a long time, Ddraig."

The Boosted Gear appeared on issei's arm. [That it has, Damian Mammon]

"Woah, Ddraig, you know this guy?" issei asked, though he barely could stand after the battle he had.

[Yes. We've met several times in the past 200 years, some of my hosts have been friends of his or sparring partners.] Ddraig explained.

"We've wasted enough time here." Damians aid before he picked Issei up fireman's carry style and walked towards where the peace treaty had been held, Rias and a blonde-haired girl dressed as nun fretting over Issei as Rias' peerage followed them.

When Damian arrived at the conference room where the Faction leaders were, he placed Issei down in a chair and was then tackled and tightly hugged by Serafall.

"Damian!" Serafall cried as she buried her face into his neck. "You're back! I've missed you! I've missed you so much! I thought you were DEAD!"

Damian hugged her back. "I'm sorry for worrying you, Sera, I'm sorry I didn't keep ion contact and made you feel like that. But I'm back now and I won't be leaving again."

"You better." Serafall said with a tearful smile as she hugged her best friend and the man she loved tightly, her arms and legs wrapped around him. Damian just held her, happy to see her again after 200 years yet guilty at making her feel like he was dead. She had always been one of his closest and best friends, and at one point he even had a crush on her but then he fell for Grayfia. Maybe there was still something there, he didn't know.

He was just happy to see his one of his best friends again.

Serafall kissed his cheek, just happy to see him again.

"You're gonna stay there, aren't you?" Damian sighed as Serafall nodded. "Why am I not surprised?"

"That was a badass entrance, Damian" Azazel commented as he pat Damian's shoulder with a big grin plastered on his face. "I always knew you had style. And I knew you'd get yourself involved."

"No matter how much I wished it, even I couldn't remain out of this." Damian said. "if I'm needed then I will help." He looked at Michael and Gabriel as they came over. "Michael, Gabriel... it's been some time."

"That it has, Damian." Michael smiled as he and Gabriel shook Damian's hand. "We thank you for aiding us in this."

"I've stayed away for too long." Damian said. "The Khaos bridgade threatens all, and since the Old Satan Faction is part of it, I figured I would finish what I started in the Civil War."

Michael nodded while Gabriel who was standing behind Michael gave Damian a flirty wink that they all saw. Azazel grinned and patted his back again while Serafall glared at the woman she called her rival with as if she was going to make the Angel combust right there on the spot.

'Stay away from my Damian.' she thought as she tightened her grip on him.

"Lord Mammon," he heard as he turned to see Sona Sitri standing there with her queen Tsubaki and the rest of her peerage behind her. They all bowed at the same time before Sona spoke. "Lord Mammon, we thank you for saving us during the incident with Kokabiel. We are in your debt."

Damian just waved it off. "Don't worry about it, Sona. I did it for two reasons, Kokabiel needed to be put out of his misery, and Serafall would've killed me if she found out I was there and did nothing while you died. And just call me Damian, Lord mammon makes me sound old and I'm not old and wrinkly."

Several of them chuckled at his words. Sona took the chance to watch Damian and Serafall closely. She could tell, with the way Serafall looked at him and acted around him, she was in love with him and clearly had been for 200 years. Her sister never attempted to date anyone, she always said she 'had someone she wanted to be with but he was gone.' Now she knew, that someone was Damian Mammon.

"Damian..."

Damian froze as the temperature in the room dropped, causing a few to look at each other. Serafall gave Damian a concerned look as the last time the temperature dropped like this, from what she heard, it was when Damian found out about Grayfia and Sirzechs.

Damian put Serafall down and slowly turned, face expressionless and cold, as his eyes landed on the two people he did NOT want to see. Serafall saw his left hand clench into a fist and shake.

Sirzechs stepped forward with a nervous smile on his face with Grayfia standing beside him, whose eyes were firmly plastered on Damian. A smile was tugging at the side of her mouth.

"Hehe, how you been buddy? Its been a long time. We've missed you," Sirzechs said happily as he waved his hands in the air childishly and stepped forward with an arm stretched out.

Rias, her peerage and Grayfia all smiled at Sirzechs friendly attitude towards Damian. Ria,s who was aware of the friendship the two once shared was happy to see her brother reunite with his long time best friend, who were close as brothers.

Damian walked forward, face still set into a cold mask before he reared back and drove his fist into Sirzechs' face, sending him flying and crashing through the wall.

"I haven't missed you." Damian said through gritted teeth before he whirled on Grayfia who had been about to step in and she froze as her eye slocked with Damian's for the first time in 200 years... since the day she told him she chose Sirzechs over him. Damian took the time to examine her.

She had not aged a day in his opinion and was still as beautiful as ever. Her long hair was now tied in neat braids which disappointed him. She was more beautiful with her hair down and her body didn't look like she had had a kid. She seemed more up tight in his opinion as well and he guessed her days of being free spirited were long over.

Grayfia meanwhile stared into his green eyes and she could still see the sadness, hurt and rage that she had helped caused all those years ago. He was still as handsome as always and without a doubt he only got better over time.

She was about to stretch her hand up to him but he recoiled from her and gave her a warning look that said 'Don't' and she stopped, sadly nodding.

"I'll give you this ONE warning now." Damian said coldly as he stared into Grayfia's eyes. "If you or any of your family come near me or mine... I will kill you and I will not hesitate to do it this time. Keep that bastard away from me."

The tone he spoke in left everyone knowing he was deadly serious. Rias's peerage went to move but one look from Damian made them all freeze on the spot. He dared them to interfere.

"Do you understand?" Damian asked Grayfia.

She nodded. "I understand," Grayfia whispered as her eyes glossed over. The moment his hand let her arm go she bolted for the wall, not wanting to let people see the sparkling tears run down her face.

She still had a reputation to uphold.

"W-Why are you like this? What makes you think you can threaten my family?" Rias asked getting some of her courage and putting her hands on her hips. "You cannot make threats against the Gremory family. We are the strongest in the Underworld."

Damian scoffed at her. "So arrogant and foolish. If you want to know why I despise your brother... ask your parents, or better yet... ask him." He turned away from her and walked away, taking deep calming breaths after that.

Seeing Sirzechs and Grayfia again... it brought back memories he'd rather not remember and he just couldn't stop the anger and rage from taking over. Thankfully it wasn't like the day he found them in bed together, he's moved past it and now... they weren't worth it, but he still had the desire to hurt Srzechs, his best friend, his brother in all but blood, for backstabbing him that way. And Grayfia... he was over her now.

They weren't worth it... not anymore.

"You okay?" Serafall asked him with concern.

He nodded. "Yeah, I'll be fine. Unfortunately, i can't stay. Now that I'm back I need to go home... to Mammon Castle."

Realization dawned in Serafall's eyes along with the others as they knew what he meant. He wanted to see his mother and father.

"Promise you won't disappear again?" Serafall asked.

Damian smiled at her. "I promise."

The Mammon family circle appeared underneath him and he started to leave. Just before he completely left, he saw Sirzechs stumble inside and look at him. Smirking Damian raised his hand and gave Sirzechs his middle finger before he teleported away.

"We are so fucked." Sirzechs whispered as Grayfia nodded sadly. Things were going to change In the Underworld and the Gremory Family would be feeling it without a doubt.


The Underworld

Damian appeared outside of Mammon Castle and felt nostalgia hit him as he looked at his childhood home, the place he grew up in, the place he and... Sirzechs would run about in as children. The place he had brought Grayfia to multiple times and made love to her.

"Place hasn't changed." Damian said with a small smile before he walked towards the doors of the castle. He grabbed the handle and gently pushed it open. He never needed a key since anyone of Mammon blood or who was a servant of the Mammon family was keyed into the palace and could walk in without a problem.

Anyone who tried to force their way in would get a nasty surprise in the form of being destroyed.

Walking inside, he had to stop and look around at the large hallway as many memories of his childhood rushed back to him. He smiled a bit as he thought on those memories, the moments he had with his parents.

He walked further in, looking over the inside and saw none of it had changed. There was some new and old paintings put up and new furniture and decorations so that was a change.

"Damian?" He heard behind him and turned to see his father standing there, looking at him in shock.

He smiled. "Hey Dad."

Azrael walked towards him slowly before he walked right up and hugged his son tightly, chuckling in happiness.

"it's good to see you again, my boy." Azrael said and looked his son over. "you haven't changed since I last saw you."

"Hey, the way I see it, if you've got a good enough appearance, why change it?" Damian shrugged, making the Angel of Death laugh.

"It is good to have you home at last. This house and this family has missed you dearly." Azrael said with a smile.

"i missed you too, Dad. I'm sorry it took me so long to decide to come back. I just... I needed to be away after..." Damian stopped when Azrael held a hand up, the gesture that Damian knew his father wanted to speak and Damian went silent immediately, it was something that always happened since childhood.

"Don't worry, your mother and I understood why you left." Azrael said before he looked at his son sternly. "Though we wish you could have kept in contact with us or at least let us know where you were and how you were. Your mother was beside herself, thinking you were dead."

Damian winced before he looked at his father. "Where is she?"

"She's out in the gardens. You still know where that is, right?" Azrael asked jokingly as his son gave him a look.

"Dad I grew up here, I know the layout even after 200 years of being away." Damian said dryly, making Azrael laugh before he patted his son on the back.

"Good luck... because your mother may get angry for you being away this long." Azrael said and walked away to go to his office and make some calls.

Damian took a deep breath. There was nothing that scared him, nothing... except for when his mother was angry at him. That scared him.

Damian walked until he found the way to the gardens and stepped out into said gardens and potted his mother right away. Sarlith was happily walking through the garden as she admired the beautiful flowers that made the Mammon estate so beautiful and famous.

Damian took a few deep breaths before he took several steps forward slowly. Would his mother be angry? Sad? Furious? Upset? He knew his leaving had hurt her but it was never intentional. Hurting his mother was never something he wanted to happen.

As he got closer towards them he saw his mother pause, clearly feeling eyes on her, and she turned around with a frown only to gasp, her eyes going wide in shock and joy as she looked at her firstborn and only child after 200 years. Her hand shot up to her mouth, trying to muffle the sobs coming from her but it was no use. Her cries of happiness were to loud to be hidden. Along her cheeks tears flowed down them like river streams and showed no case of stopping.

Damian started walking faster and Sarlith started walking towards him before she lifted the hem of her dress so she could run and Damian ran as well until they met in a tight hug, Salirth crying tears of joy as she hugged her son for the first time in 200 years and Damian hugged his mother back just as tightly.

"Hey Mom." Damian said shakily as he struggled to keep the tears in. "Sorry I was gone for so long."

Her response was a hearty laugh mixed through her crying and she leaned up and began placing motherly kisses all along his face. She then stopped to look at him and caressed his cheeks.

"I've missed you so much." She said as Damian closed his eyes at feeling her hands on his cheek and because of the pain in her voice. He lowered his head, guilty and blaming himself but Sarlith tilted his head up so she could look at him. "My son... my grown up baby is back. You look so handsome."

"Well, i get the looks from Dad." Damian said and she giggled.

"You are not going away again, young man." Sarlith said sternly. as she wiped her eyes and felt Damian place his arm across her shoulders and kiss the top of her head.

"I promise I won't mom," he said making her smile happily before he felt a sharp whack on the back of his head courtesy of his mother.

"That's for not calling us at all. That will be the least of your worries when I'm through with you." She said making him gulp and nod his head quickly which brought another smile to his mother's face as it softened.

She looped her arm into his and placed her head on his shoulder.

"I want to know everything. Don't leave anything out." She said as she led them back into the castle.

"Well... some of it might shock you." Damian said with a wince, knowing his mother was going to freak when she found out he was married and the father of two children with two different women...


In a different place completely, a dimly lit cave that was illuminated only by the little amount of light that made it this far inside a large body could be seen laying on its side.

A single eye belonging to it slowly opened, revealing a large, deep blue iris that seemed to almost be glowing in the darkness compared to its surroundings. The head of the large body curled around, its single eye landed on the smaller body that was pressed against its own.

Capable of seeing in the dark with no problem; it watching the slow, rhythmic movement of the smaller being as its own tail curled around it protectively while the expression it held softened.

Perhaps it was time, time for her daughter to meet her father. She had managed to sense him. It was quick but she knew, his energy signature was unique. She's recognise it anywhere considering he was one of a kind.

Interesting enough she had sensed it in Kuoh as well.

She would break the news to her whelp later though as she had waited long enough to find out and while she wouldn't admit it out loud she was curious to see how he was doing these days...


And that's it for this chapter everyone. Hope you liked it and that little ending.