Wistfuldreams98 - Thank you so much! I'll try my best to keep it up!

ProjektEndsieg - Thank you so much for your support! I hope it meets your expectations :)

Toxiclogical - I really like Campione :) as for his powers, well I don't wanna spoil anything in this chapter but I wanted to make him super OP so I hope you like it ehe.

Author's Note - Early update but once I kept writing I couldn't stop, so here's chapter 2. I decided on the harem to be Serafall, Gabrielle, Kuroka, Le Fay, and Irina so I hope it's okay. I also wanted to focus more on characters than powering up so I made him super OP to begin with. Anyways, hope you guys like this chapter and see you soon :)

2

Sirzechs, along with Ajuka and Serafall, sat across from Asa Masamune, back at the Gremory manor. It was a hassle to explain to his parents and Rias why they had brought home a stranger, but they needed answers and the middle of a wrecked battlefield didn't seem like the best place to talk.

They were all in one of the guest rooms in the manor, with couches and a coffee table as well as several bookshelves. It seemed like a nice place to talk, however Sirzechs could tell that Masamune didn't want to talk.

The door opened up and Grayfia walked in with drinks for everybody. "I'm sorry that took so long."

"No, it's okay," Sirzechs said. "Thank you, Grayfia."

"I'll leave you all to it then," She bowed, before closing the door on her way out.

"Tea?" Masamune asked.

Sirzechs smiled. "It's Grayfia's special jasmine herb tea. It's supposed to help you relax."

"I see," He said as he took a cup and blew on it a few times before sipping. "It's good."

"Grayfia's tea is always so delicious!" Serafall gulped the whole cup down before setting it down.

"Serafall, we have a guest," Ajuka said. "Please behave."

"Masamune-Kun," Sirzechs said. "You said you were a godslayer, right? Can you tell us more?"

Masamune set his cup down. "The politically correct term is Campione," He explained. "The Magician's Society says that it's a term given to those who succeed in killing a god. Apparently once you kill a god and usurp their authorities, you're the automatic ruler of whatever country you came from. Which made me the King of Japan."

"The King of Japan?" Serafall asked. "That sounds pretty cool."

"Those words that you spoke before that attack," Ajuka said. "The hydra called them, Words of Power?"

Masamune nodded. "Words of Power are words that you chant before using an Authority, it increases the strength of your Authorities, but in my case, it weakens a god's divinity."

"You can weaken a god by speaking words?" Sirzechs asked. "I've never heard of anything like that."

"I didn't really understand it myself at first," Masamune said. "But over time, I saw how powerful they were."

"I see," Sirzechs had no idea of the strength of a Campione. The history books never spoke about what it was they could do, more so their origins and influence. But then he remembered something. "Masamune-Kun, you said you fell out of the sky? What did you mean?"

Masamune seemed hesitant to talk, however he opened up. "There was an incident, on Mount Olympus. The original Olympians, the Titans, mounted a rebellion and all the gods were engaged in battle. Somehow I was drawn in, and before I knew it, there was an explosion that sent me into the sky. I think the hydra was caught in it with me…and I landed here."

Sirzechs examined Masamune's body. He could tell from the magic in Masamune's body that he definitely wasn't human anymore, however the full capabilities he held were so far from Sirzechs' understanding.

"Why don't you stay here for awhile?" Sirzechs asked, to the surprise of both Serafall and Ajuka. "Maybe we can find a way for you to go home."

Masamune looked down at his hands. "It's okay, I appreciate the offer, but I don't really have any intention of going back."

"What? Why not?" Serafall asked.

Masamune didn't reply, he seemed lost in his own mind. Sirzechs knew that the last thing he wanted to do was interrogate someone as powerful as a Campione.

"Why don't we end our talk here," Sirzechs stood up. "Masamune-Kun, there's plenty of spare bedrooms for you to use here. You can stay as long as you'd like until you figure out what it is you want to do."

"I…Why would you do so much for me?" The Campione asked.

"I told you, not all Devils are as bad as you think," Sirzechs smiled. "Plus, you don't really seem like a bad guy." He walked over to Masamune and held out a hand. "C'mon, I'll show you to your new room."

Sirzechs led him upstairs and gave him the bedroom across from his. It was supposed to be for Sairaorg or Sona whenever they stayed over, but since it's an emergency, he seemed like it was necessary.

"Thank you, Sirzechs," Masamune said.

Sirzechs smiled. "Let me know if you need anything, okay?"

Masamune nodded before he closed the door.

Sirzechs sighed as he noticed his two friends standing behind him. The three of them walked downstairs as they talked.

"Are you sure you should be opening up your home to him?" Ajuka asked. "We know nothing about him."

"Ajuka," Serafall said. "I've never seen someone so void of life. He's a Campione, a being with an enormous amount of power and potential, I always expected someone like that to be vibrant and confident, but yet…"

"Something must have happened," Sirzechs said. "He seemed as though he had given up on living. I can't just turn my back on someone like that."

Ajuke sighed. "Always the righteous and noble Devil King, aren't we?"

Sirzechs chuckled. Honestly, he didn't know what to make of Masamune. Serafall was right, however. For someone so powerful, he really didn't show it. Sirzechs had never seen someone with those eyes before…eyes so void of life and hope, it was like he had been walking in the dark for so long, he had forgotten the light.

"So," Lord Gremory asked, waiting for them at the end of the staircase. "Who's our new friend?"

The three of them were hit off guard. Sirzechs knew that he had to keep the fact that Masamune was a Campione a secret, at least until he could figure out how to explain everything. But how could he explain bringing a stranger home and giving him one of their rooms. This is bad.

"Actually," Serafall said. "He's one our old friends from back in the day. It seems as though he came back to Japan and didn't have a place to stay, but luckily Sirzechs was kind enough to offer him a room here."

Lord Gremory raised an eyebrow and smirked. "Heh? He did, did he?"

Sirzechs gulped. He had no choice now, he had to play along. "Y-Yes. I'm sorry for not telling you in advance, father."

Lord Gremory smiled. He patted Sirzechs on the shoulder. "No need to apologize, Sirzechs. He's welcome here any time. If he's hungry, tell him Grayfia is available any time to help him."

Sirzechs was incredibly relieved that his father actually bought such a simple lie. "T-Thank you, father."

As Lord Gremory walked away, the three of them sighed. "That was a stupid move, Serafall." Ajuka crossed his arms.

"I panicked!" She cried. "What did you want me to say, he's a Campione who fell from the sky and killed a hydra in a single attack and we need him to answer more questions for us?"

"No," Sirzechs said. "You did a good thing, thank you Serafall."

Serafall sighed and slouched her shoulders. "I can already tell this is gonna be a pain. Why don't you two go see if you can figure out what happened at Olympus. I'm gonna go check up on him and see if he's okay."

"Yes mam," Sirzechs smiled as Serafall walked up the stairs.

Ajuka poked his shoulder. "Doesn't she seem…a bit interested in Masamune to you?"

"Well yeah, I'm interested in him too," Sirzechs said. "Why?"

"No, not curious," Ajuka said. "Interested."

Sirzechs raised an eyebrow. "What do you mean?"

Ajuka sighed and walked away. "Nevermind, you idiot. C'mon, let's go."

"W-Wait!"

…

Serafall went to the kitchen and asked Grayfia to get her two cups of apple juice and a tray to bring up to Masamune-Kun. For some reason, she felt a great deal of pity for him. It wasn't as if she could do anything, but she at least wanted to know why he was so distant. She had never seen those eyes before…she felt as though she needed to do something. Her heart would crumble if she just left him like that.

"Um," She knocked a few times on the door. "Masamune-Kun, may I come in?"

"Y-Yes."

Serafall smiled as she opened the door. The guest bedroom wasn't as big as any of the master bedrooms. Simple in it's decor with a queen sized bed at the end of wall with twin nightstands, two couches facing each other with a table in the middle, a desk to the side wall and a window to the other wall.

Masamune was sitting on the bed. He had taken off his trench coat and just wore an all black outfit. He looked…stunning. His skin was a perfect pale, glossy snow and his black hair contrasted nicely. His golden eyes were like two priceless jewels. He was probably the most beautiful person she had ever seen, now that she was seeing him so up close.

"I-I brought you some drinks," She said. "I thought you'd be tired from today. Do you mind?"

"No, not at all," He got up and joined her at the couch.

The silence was deafening. She didn't know what to say, she didn't know what to do. What should she do? She had never been in a situation like this with a person like him. It was so quiet she could hear her heartbeat. Was it going faster? Why was it going faster? Calm down Serafall, she thought to herself. Calm down, calm down, calm down…

"Um…"

"Yes?" She propped up her head at a simple word. Her faced instantly went red from the embarrassment.

"I don't think we've properly met," He said. "I'm Asa Masamune. It's nice to meet you…uh…"

"S-Serafall," She mustered. "Serafall Leviathan, but you can just call me Sera for short. It's nice to meet you as well, Masamune-Kun."

"Sera," He said. "Where are we? This place, definitely doesn't feel like Earth. Plus," He looked out the window. "The sky is black, even though the sun is up."

Serafall sighed in relief. He was just curious. She smiled and answered him. "We're in the Underworld. It's where most of the High-Class Devils live. If you want, we can go visit the human world later."

"The human world, huh?" He said. "Hey Sera? What year is it?"

"What year?" She thought it was a weird question, but maybe his memory was just hazy from the explosion. "It's 2012."

For a second, she could have sworn she saw a smile tug at his lips. However when he looked up at her, he had returned to his stoic expression. "I see, thank you."

"Is everything okay?" She asked.

"Hey Sera," He said. "Why are you helping me so much?"

She smiled. "Because we're friends now aren't we? I wanna get you home so you can see your friends and family again."

She knew she had said something wrong. She instantly regretted uttering those words, because for the first time in those eyes, she saw emotion. She had hoped that it would be joy or happiness, but all she could feel was sadness and despair.

"Friends, and family…huh?" He echoed.

"Masamune-Kun?"

"Hey Sera," He said. "Can I ask you something? You seem to be a pretty powerful Devil, which means you must have been around for awhile haven't you?"

"Well, yeah, but…"

"How old are you?"

Serafall blushed. "M-Masmune-Kun…it's not nice to ask a lady her age, you know…" But when she looked at him, there were those eyes again. She saw nothing was sadness in the gold of his eyes. "Around…300."

"I see," He said, with no hint of a reaction.

Serafall scratched at the back of her head. "I guess I'm pretty old huh?" She laughed it off.

"Not to me, you're not," He said softly. He said it so softly, she could hardly hear him. However before he could ask him to repeat, there was a knock at the door.

It was little Rias. She had opened the door and walked inside. "R-Rias! You shouldn't come in without permission."

"Huh? But I wanted to meet brother's new friend," She walked over to Masamune and smiled. "I'm Rias Gremory. It's nice to meet you."

Masamune looked at her for a second, and then extended his hand. He placed it on top of her head and for the first time, Serafall saw him smile. It wasn't a fake smile or something forced, he smiled happiness as he rubbed Rias's head.

"It's nice to meet you Rias," He said. "I'm Masamune, let's get along okay?"

"Okay!" Rias said.

She began to walk to the door but stopped before she left. "Oh, Lady Leviathan, brother says for you two to come to his study. He says it's important."

"His study?" She asked, but Rias had already left. She quickly looked to Masamune, who had already shed his smile and returned to his normal face. A part of her was saddened, seeing someone who's smile shined so brightly to have such a sad look. But she didn't want to press any further. "Shall we go?"

"Yeah," He got up and followed her out the door and into Sirzechs' study.

Of course, his study was a complete mess. She knew Sirzechs was always a slob, but this has to take the cake. There were piles and piles of old books, research papers and notes all laying on the floor. His desk was like a fortress made of old history textbooks she read when she was a kid.

Sirzechs and Ajuka stood in front of his desk, looking at an old book. "What's going on?" Serafall asked. "Rias said it was important."

Sirzechs had a concerned look on his face, and Ajuka was more serious than ever. "Masamune-Kun," Sirzechs said. "You said that Mount Olympus was under attack, right? By the Titans?"

"Yeah," The boy replied. "Though I don't know how the conflict was resolved. Why?"

The two exchanged looks, before looking to the two of them. "Mount Olympus is fine, in fact it's been safe for hundreds of years. There hasn't been any attack or invasion in a long time."

Serafall's eyes were locked onto Masamune. "W-What?"

"In fact," Ajuka said. "Zeus confirmed that the Titans are still locked away in the deepest pit of Hell, guarded 24/7. There's no way they could escape."

"But then…" Serafall looked to Masamune. "What does this mean?"

Masamune's lips curved into a sad smile. "I figured as much."

"Huh? Masamune-Kun…" Serafall turned to Sirzechs and Ajuka. "Explain, right now."

Sirzechs took in a breath. "I think, Masamune is from a different world. A world where the Campione never died out, in fact a world where they're still in power. A world where Mount Olympus was invaded by the old Titans."

Serafall tried to process everything, but it didn't make sense. "How is that even possible? Do you realize how much magic is needed to do such a thing? I've never even heard of inter-world travel before."

"Well, there's only one person who can confirm it," Ajuka said.

Serafall looked to Masamune, who had already come to the conclusion. "Sera, you said that it was 2010, right?"

"Y-Yeah…"

"When I fought in the Titan War," He said, with a sad smile. "It was 2719."

Serafall could feel her heart stop. "W…What?"

"I sensed it when I fought the hydra, that the magic on this world, even though it's the Underworld, felt different," Masamune explained. "I had my suspicions, but I didn't confirm until you told me the year. It all made sense after that."

"But Masamune-Kun," Sirzechs said. "Why is it that you don't want to go back? I'm sure there's a way, you can finish the War…"

Masamune shook his head. "It's okay, Sirzechs. The truth is, I have nothing left to return to."

The three of them were all shocked and speechless. "Sera, remember when I asked how old you were? I didn't mean to insult you, but 300 years…I wish I could be that young again."

"Y-Young?" Serafall asked in horror. "Masamune-Kun, how long have you been a Campione?"

Masamune had that sad smile again. "I became a Campione when I was 16, when I defended by best friend against Susanoo, the god of storms." He looked to all of them. "That was over 700 years ago."

Sirzechs dropped his book. They all stared at him with shock in their eyes. "S…Seven hundred years…that's the longest lifespan I've ever seen…" Ajuka said. "Even Lord Gremory and my father are only around 600…maybe Lord Micheal?"

"Masamaune-Kun…" Serafall took his hand. "All that time…"

"Thank you, Sirzechs," Masamune bowed. "I can't thank you enough for opening your home up to me, but I think I should take my leave. I don't want to be a burden on you any longer." He quickly turned and left the room.

"M-Masamune…" Sirzechs was at a loss for words.

"Masamune-Kun!" Serafall ran out the door and grabbed his hand. "Don't leave."

"Sera…"

"You've been alone…all this time, haven't you?" Sera asked, tears starting to overfill her eyes. "That's why you have those eyes…it's because you've been alive for all this time. The pain you must have endured."

Masamune straightened and looked up at the ceiling. "I had friends…no, family, a long time ago. I told them that I would never age, which meant a life with me would be nothing but hardship and pain, but they still stood by me. They fought alongside me, they laughed with me, they cried with me…" She could feel his hand start shaking. "Even though I knew that they could never have a life with me, I still wanted to be with everyone for as long as I could. But as the years went on, they began to grow and age, while I still remained the same. Every passing day felt like a million knives in my heart, Sera." He turned to her, tears flowing. "I buried them, one after another, and it felt like a part of me died along with them. Even when I wanted to die, even when I tried to die, I kept on living. I lived because I realized it was unfair to them, the people who risked their lives for me, for me to die like a pathetic coward. So I kept living, and kept my distance from humanity. All the while protecting them, without them knowing."

"Masamune-Kun…" Serafall leaped into his arms. "You're not alone anymore. We…I'm right here."

"Sera…I'm immortal," He said. "This Blessing…the Blessing of Olympus, it makes me unable to age, unable to die of anything…a life with me is nothing but pain."

"I don't care!" She squeezed him tighter. "I'm a Devil, a Devil King. I can live for a long time too. That's why," She looked up at him, smiling with tears still running down her cheeks. "You don't have to be alone anymore, okay?"

"Sera…" Masamune seemed to be at a loss for words.

"So," It was Sirzechs. Serafall parted and looked at the two Devil Kings, who were smirking. "Does this mean you'll stay?"

Masamune looked to Sera, who smiled back at him. "Yeah, I guess I'll stay."

"Then there's something I would like to confirm," Sirzechs said. "Can you show us your powers, Masamune-Kun? I would like to see for myself what a Campione's true power is like."

Masamune raised an eyebrow. "Sirzechs…are you sure?"

…

Everyone gathered at an old Colosseum on the outskirts of the Gremory territory. It used to be an old training ground back during the Great War, but since then mostly kids come here to play. It seemed like a good place for Sirzechs, Ajuka, and Serafall to gauge the strengths of a Campione. First up was Serafall fighting against Masamune.

"Are you sure about this?" Masamune asked once again. "I don't want to hurt anybody."

"I'll be fine Munecchin," Serafall smirked.

"M…Munecchin?" Masamune asked.

"Let's start then!" Sirzechs declared.

Serafall opened with a massive ice attack that travelled via the ground and headed towards Masamune. Sirzechs knew from the attack against the hydra that he was an element based magic user, but he didn't know the extent of it. Sirzechs expected Masamune to use fire to deflect the ice attack…however the Campione merely smashed his fist on the ground and cracked the ground in front of him in order to break the attack.

"W-What strength…" Ajuka was taken back as well.

Sirzechs had never seen such raw, physical strength before. That wasn't magic…that was simply him punching the ground.

Serafall didn't seem fazed by the attack, instead launching another one. She opened several magic circles behind her and shot dozens and dozens of ice shards at Masamune. Surely he'd use a fire element this time, Sirzechs thought.

Instead, Masamune held out his hand and all the ice shards simply stopped before they could come in contact with him.

"W-What the hell?" Ajuka asked. "Is this magic?"

"No," Sirzechs said. "What was the word he used? Authority?"

Masamaune waved his hand over his head in a circle, and all the ice shards melted into water that formed a spiraling vortex above him. With his arms spread open, the vortex expanded and knocked Serafall back before she could guard.

"It's not a good idea to use ice or water against me," Masamune said. "Poseidon's Authority over the oceans gives me an advantage."

"Poseidon? So he stole the Authority from the sea god?" Ajuka asked.

"Well how about this?" Serafall clapped her hands together and formed a red magic circle. It went towards Masamune before multiplying and surrounding him. With a snap of her fingers, all the magic circles ignited and a brilliant ball of fire engulfed Masamune.

"Did she…did she do it?" Sirzechs asked.

"No, wait," Ajuka pointed.

At the center of the fire, Masamune was still standing. With a swipe of his hands, the flames dispersed. Masamune was completely unharmed, not even his clothes or hair were singed.

"W-What the hell?" Serafall was flabbergasted.

"Authority over fire?" Sirzechs asked.

Masamune held out his hands as a ball of flames combusted. "Hephaestus's Authority over fire." Masamune said, before launching a nuke of an attack against Serafall. A great blast, equal to the one he used against the hydra, was launched at Serafall. She luckily blocked the attack with an ice wall, but the attack simply went around her and destroyed the surrounding area behind her. She stood on a small space that seemed to remain after that devastating blow.

"Two out of the 12 Olympian gods," Ajuka said. "What is this?"

Serafall didn't seem like she was backing down as she jumped in the air and created three large magic circles that formed a triangle. "Lightning Emperor!" Sparks of lightning shot from the circles and formed a ball that blasted at Masamune.

It was for a split second, but Sirzechs saw it. Masamune materialized a long staff with a lightning bolt shape at the end and withstood the attack. No, he absorbed it. All the lightning from Serafall's attack was absorbed into the staff.

Serafall landed and was as speechless as Sirzechs and Ajuka. He couldn't believe what he was seeing. He had never seen Serafall be so powerless against an opponent like this before. Granted she wasn't trying her hardest, but to withstand three of Serafall's strongest spells and not even move…wait a minute…

"He…He hasn't moved an inch, since the match began," Sirzechs said.

"W-What!" Ajuka's eyes were shaking. "What kind of monster is he?"

"Zeus's Authority over lightning."

"So this is that Blessing you told me about," Serafall smirked. "You're one tough cookie, Munecchin."

"The Blessing of Olympus," Masamune explained. "The Authorities from the 12 Olympian gods, none of the hassle of having to kill them."

Sirzechs could feel his legs shaking. He had never felt such a powerful magic pressure before. He realized just how dangerous Masamune really is. The potential he has…if the world ever finds out that there's a Campione still alive, and one who's as powerful Masamune…things could get bad really quick.

"So this…this is a Campione…" Sirzechs couldn't help but grin with excitement.