Chapter 1: Gathering the Flames

Hey everyone I'm back. Sorry but I took down Team Vongola and put this in as the new Katekyo Hitman Reborn story. I've been wanting to do a DxD story for a while but could never figure a good enough plot or idea. Thankfully I figured it out. I hope you like what I have planned. Please Review and Enjoy.

Ever go to church when you were little and heard all those crazy stories about Angels, Devils and Fallen Angels? Well…those stories are true, they exist.

They've lived their entire lives among humans and nobody's been the wiser. All except for one family. During the Great War, there was one group of humans who fought back and helped bring an end to all the death and bloodshed to all sides of the 3 Factions, these humans were members of the Vongola family.

Since then the Vongolas have been the only humans allowed to go to places like Hell or Heaven without getting killed or turned into Devil or Angel.

Thousands of years have passed since the Great War and we find ourselves in the Underworld at an enormous mansion, the House of Gremory.

Standing in front of it was a family of three. A man with spiky brown hair, a woman with medium brown hair and little boy with spiky brown hair. These were Tsuna and Kyoko Vongola and their son Seth Vongola.

"What do you think Seth? This is where you dad comes on some of his business trips." Kyoko said as Seth's jaw was still dropped.

"It's enormous." Seth said in awe as Tsuna patted his back.

"Just think Seth, when you find your own team you'll be the one coming to these places all the time." Tsuna said as Seth looked up to see the Vongola ring on his finger.

"Tsuna, you made it." Walking out the front door was a man with crimson red hair in a suit walked out to them. This is Sirzechs Gremory.

"Wouldn't miss it." Tsuna smiles shaking his hand.

"Kyoko, still as beautiful as ever." Sirzechs said kissing her hand.

"Careful Sirzechs, you don't want Grayfia to catch you flirting with other woman." Kyoko giggles.

"And this must be Seth." Sirzechs said bending down to look him in the eye.

"Uh hello sir." Seth said nervously.

"Sirzechs, 't worry I don't bite." Sirzechs smiles. "How old are you Seth?"

"I'm 6."

"You're near the same age as my sister, the birthday girl." Sirzechs said standing up. "Come on in."

Entering the party, Seth was blown away by all people inside the main room, but he didn't see many kids for a party that was for someone his age.

After an hour, Seth saw his parents talking with Sirzechs and quite a few other people.

Seeing the food table Seth takes a sweet before he walks out of the room towards a balcony and sighs. "This place feels like a meeting rather than a birthday party."

"No kidding." A female voice said.

Turning to the side, Seth saw a girl his age with long red hair like Sirzechs sitting nearby.

"What I wouldn't give to just have a simple party with a cake and a few friends." She sighs.

Seth looks to the small cake in his hand and held it out for her. "Is this simple enough?"

Looking at the cake, she smiles and takes it. "My name's Rias Gremory of the House of Gremory."

"Seth Vongola." Seth introduces. "And if you want a few friends I can be your friend if you don't mind?"

Rias looks at him and instead of seeing a person just interested in her for her family or power she saw someone who wanted to be with her for her. "You know how to play Chess?"

"A little." Seth said as they walked inside and found a board.

Spending the rest of the night together, Seth and Rias smiled as they played a few games. While Rias did win most of them Seth was able to win a few on his own.

"And checkmate." Seth said moving his Knight.

"Not bad how many wins does that make for you?" Rias asks.

"4…out of 10. You are good." Seth said.

"Lots of practice." Rias said as they heard movement inside and saw guests leaving. "Another party and no one even noticed I was here."

Seth looked inside and saw something before standing up. "Wait here." Grabbing the cake he gave her Seth ran inside and a minute later he walked back out with the cake but it also had a candle in it. "Happy Birthday to you. Happy Birthday to you. Happy Birthday dear Rias. Happy Birthday to you."

Rias smiles as Seth put the cake down in front of her.

"Now blow out the candles and make a wish." Seth said as Rias blew out the flame. "Sorry it was just me this year."

"Well you can come back again and you can meet my friend Sona, she loves someone who can play chess." Rias said.

"I'd like that." Seth smiles as Tsuna walks out.

"Seth there you are. You ready to go home?" Tsuna asks as Seth nods.

"Happy Birthday Rias. See you soon." Seth waves as Rias waves back.

"Seth Vongola." Rias smiles.

And from that moment on Rias and Seth became friends and as years went by they helped each other out as they both struggled to live up to their family names.

4 years later, Rias and Seth were in the back of the mansion as Srizechs and Tsuna were having a meeting while the two of them practiced.

"Come on Seth. You can do this." Rias encouraged as Seth focused with all his might causing an orange flame to appear in the middle of his head and two much smaller flames appeared where his fists were.

Running forward Seth threw a punch destroying the dummy but when he hit the stone holding it up Seth screams in pain as his flames disappeared and he held his hand. "Ow, ow, ow, ow." Seth whines while Rias giggles. "You've been hanging out with Akeno too much if my pain makes you smile now." Seth glares.

"Come on Seth, Akeno isn't so bad." Rias said.

"She acts weird every time I hurt myself." Seth said.

"Oh don't be such a big baby." Rias said walking over and examines his hand before kissing the bruise causing him to blush softly. "Feel better now?"

"A little." Seth said looking away when two girls walked out. One had long black hair tied in a ponytail with a ribbon and the other had short black hair in a bobcut and glasses. These were Akeno Himejima and Sona Sitri.

"Sona, you made it." Rias smiles.

"What happened here?" Sona asks.

"Aw did poor Seth hurt himself again. I missed the good part. I love hearing him scream and whine." Akeno smiles.

"I told you." Seth said looking to Rias.

"At least your Dying Will Flames are getting bigger. When you first started you could barely make a candle flame." Sona said.

"You've been coming by a lot lately. Is something going on?" Rias asks as Seth looks away nervously. "Seth what are you hiding?"

"In a few months I have to leave." Seth said getting their attention. "It's time for the Trial of the Rings where my father gives me the Vongola Rings and I leave home to find the others."

"It's that time already? How long will you be gone?" Sona asks.

"Could be a few months could be even a few years depending how long it takes me to find them." Seth sighs.

"All by yourself?" Akeno asks.

"Not exactly. I'm allowed one family member or friend of my dad to help guide me." Seth said.

"But Seth what about us? It's not gonna be the same without you." Rias frowns.

Reaching out Seth cups her cheek. "I promise I'll come back. After all, a Vongola always comes to save the day for the people they care about." Seth smiles causing a soft blush to form on Rias's face as she gave him a big hug.

Soon the night before the Trials, Seth was packing up his bag when he heard a knock on his door and saw Tsuna walk in.

"You almost ready?" He asks.

"I think can I ask you something?" Seth asks as Tsuna sits down next to him.

"What's wrong?" Tsuna asks.

"Dad when you first became the Vongola Heir were you ready?" Seth asks causing Tsuna to chuckle.

"Oh god no, I was a disaster. I used to be called No-Good Tsuna." Tsuna said.

"You?" Seth said shocked.

"Seth, I made a lot of mistakes no arguments there, but I grew stronger and smarter with each one and was able to find my own team to help me. So will you. You'll be fine." Tsuna assured.

"Thanks dad." Seth smiles as Tsuna patted his shoulder.

"Hey I got you something to help you out." Tsuna said taking out a pair of black fingerless gloves. "These should help you control your flames."

"I love them." Seth smiles.

"Your Uncle Al will be here tomorrow to help you with the trials." Tsuna said.

"Yes! I love Uncle Al he's fun." Seth smiles as Tsuna stood up and took the Vongola Sky ring off his finger.

"You know I'll never forget the day your grandfather passed this onto me. He was so proud and I'm proud of you Seth. And so long as you carry this ring, the Vongola family will be with you every step of the way." Tsuna said as Seth slowly reached out and took it.

Not being able to hold it in tears ran down Seth's eyes as he hugged his dad tightly.

"I'll make you proud." Seth said.

"You already have." Tsuna said hugging back before walking out to see Kyoko waiting for him.

"Him? You chose him to guide our son through the trials?" Kyoko asks.

"He's Seth's godfather and he can teach him on the road." Tsuna said.

"Of all the people in Earth, Heaven and Hell I still can't believe he's the one you chose to take care of him. We had so many who could fill that position." Kyoko sighs.

"I wanted to be sure Seth was safe in case something happened and he's the best." Tsuna said.

"You honestly trust that guy with something so precious?" Kyoko asks as they walked down the hall.

"I would trust him with my life." Tsuna said as he opened the door to see a man who appeared to be in his 20's with black hair in golden bangs and a goatee. This was Azazel, leader of the Fallen Angels. "Couldn't wait huh?"

"It's a big deal for this family. I wanna make sure my godson chooses the right team." Azazel smiles before turning to Kyoko. "Mmm Kyoko, still looking as smoking as ever." He licks his lips causing her to glare. "Hey don't be like that. We're family."

"You sure you can take all this time off to help him?" Tsuna asks.

"Yeah those bird brains won't dare do anything without my approval. Trust me as long as he's with me they won't even know he's there." Azazel said.

"Did you pick them up?" Tsuna asks.

"Got them all right here." Azazel said taking out a box to reveal 5 rings inside it.

Examining them he saw rings with a tornado, raindrop, sun, mist and lightning bolt. "Where's yours?" Tsuna narrows his eyes.

"Can't blame a collector for wanting to hold onto the good times. I'm gonna miss this thing." Azazel sighs reaching into his pocket to pull out a ring with a cloud on it and holds it out to Tsuna who puts it in the box. "Generations of Vongolas passing these rings down to whoever the heir deemed worthy, but you were the only one crazy enough to ask me to join."

"Thanks for helping me every step of the way." Tsuna smiles.

"Thanks for helping this stubborn old crow find a reason to keep flying." Azazel smiles.

"You did more than enough for me. Watching and working from the shadows." Tsuna said holding out his hand.

Reaching out Azazel took Tsuna's hand and shook it.

The next morning, Seth looked to his parents and gave them a hug.

"Be strong Seth." Kyoko said kissing his cheek.

"I will mom." Seth nods.

"Good luck Seth. I'll tell Rias and Sona about your progress every time you call." Tsuna said.

"Whoa, two girls already? My godson is becoming quite the player." Azazel chuckles. "Seth you and I are gonna have a nice talk about this."

"Don't even think about it." Kyoko glares.

"What? He's a growing boy he should learn about it." Al said.

"Not for a few more years." Kyoko said.

"Alright, alright. I won't say anything." Azazel backs up before turning to Seth. "You ready, kiddo?"

Seth slowly nods his head before putting the Vongola Sky ring around his neck. "I'm ready Uncle Al."

"Good luck Seth." Tsuna said.

"Thanks dad." Seth nods as he and Uncle Al leave home beginning Seth's journey to find his team.

A few weeks into their travels the two of them were walking down the streets of a small town in Japan.

"I still don't see what was wrong with the last guy. He looked pretty strong." Azazel said.

"Yeah but I don't wanna just give them to the first people I see. I wanna find someone I know will be a great addition." Seth said when out of a nearby bar a man just barely over 20 was thrown out the door.

"Ugh." He groaned picking himself up to reveal he had jet-black hair that was pulled back in a low ponytail and dressed in blue clothes when three men came out of the bar.

"Seth get back." Azazel said leading them out of their sight.

"You owe me money!"

"Yes well I appear to have drunk it all." He smiles with a drunk expression on his face. "But you're welcome to it when it comes out." The man throws a weak punch but the three guys dodge before punching the man in the gut knocking him to the ground again.

The man looks around and sees the coast was clear. As far as he know the four of them were the only ones around.

Closing his eyes the man opens them to reveal his eyes turned red with three tomoes in them.

As the three thugs looked into his eyes they let screams of pain and agony before fainting on the spot.

Closing his eyes they returned to normal as he was about to walk away.

"Whoa. How'd you do that?" The man turns to see Seth walking up to them. "You just looked at them and they fell."

"Kid you're seeing things. They were just on drugs or something." The man said.

"Never thought in my age I'd see a Sharingan." Azazel said walking out causing the man to stop in his tracks. "Thought that was extinct."

"I'm the last one." He narrowed his eyes.

"You used illusions to beat them didn't you?" Seth asks.

"If you want them you'll have to rip them out of my dead body because I'm not going down without a fight exorcists." He said taking a fighting pose until Azazel appeared in front of him and grabbed his arm.

"We don't wanna fight, but I think my nephew might wanna talk to you." Al said.

"Not interested." He said looking away.

"I'll buy you a drink." Azazel said.

A few minutes later, the man was drinking down a beer.

"Boy you really couldn't wait to hit the drinking age, could you?" Azazel asks.

"My life hasn't exactly been good to me." He said.

"What's your name?" Seth asks.

"My name is Itachi Uchiha and years ago my family was killed by exorcists because they wanted the power of our eyes. I managed to defeat them but not before they took everyone my parents even my little brother." Itachi frowns.

"So you plan to drink yourself to death?" Azazel asks.

"Might as well." Itachi said.

"You don't have to." Seth said getting his attention. "I need someone like you watching my back. I know I can't ever replace your family but if you're willing to give me a chance you can be a part of my family."

Itachi looks to Seth and in his smiling face he saw the face of his little brother.

Reaching into his bag Seth pulls out the Ring of Mist. "I think this one best suits you and your powers."

Itachi looks at the ring carefully before a soft smile appears on his face. "Why not? This certainly beats alcoholism."

And just like that Seth found his 1st member of his team.

Months had passed as Itachi had slowly begun to open up to traveling with Seth. With his help Itachi even quit drinking much to everyone's joy.

Soon they were in the country walking towards a small house.

"Now let me do the talking first. The person who lives here is an old friend of mine." Azazel said.

"You think she'll be able to help find someone to join us?" Itachi asks.

"Oh yeah. She used to fight alongside Seth's father." Azazel nods causing Seth to smile.

"We're going to see Aunt Tsu?" Seth asks.

"Trust me if anyone can help us find a good guardian it's her." Azazel nods walking up to the door and knocking on it. "Hey Tsunade you home?"

Seconds later a hand punched through the door and yanked Al in.

Panicking Itachi and Seth run in to see a woman with long blonde hair and a diamond in the middle of her face holding Azazel up by his jacket. This was Tsunade Senju.

"Azazel. I thought I said if I caught you peeking around my house again I would crush you." Tsunade glares.

"Aw come baby you're not still mad about the Hot Spring incident?" Azazel gulps as she glares at him. "I brought Seth with me." He quickly points causing her expression to instantly change to a smile as she drops Azazel and turns to Seth.

"Hi Aunt Tsu." Seth smiles as Tsunade pulls him into a big hug.

"Oh there's my nephew." Tsunade smiles holding him close causing her gigantic breasts to nearly suffocate him.

"Some boys get all the luck." Azazel said Itachi walks over.

"Who is this?" Itachi asks.

"Her name's Tsunade, she was Tsuna's old flame." Azazel said.

"You mean she was on his team a holder of a ring or that they were once a thing?" Itachi asks.

"Both. Come on you think any guy in their right mind would have a smoking babe like that on their team and not want a piece of it?" Azazel teases as Tsunade lets Seth go.

"Seth please tell me your godfather hasn't been teaching you any of his old habits." Tsunade said.

"No." Seth shook his head.

"Good boy." Tsunade said ruffling his hair. "So to what do I owe the pleasure?"

"I need to find my other 5 Guardians." Seth said showing her the box causing her to smile remembering when Tsuna first came to her with the Ring of Sun.

"I'm flattered Seth, but that part of my life is over." Tsunade said causing him to frown. "But I might have a close second."

Everyone walked out to see a girl with long pink hair probably in her teens standing in front of three stacked boards. This was Sakura Haruno.

"I didn't know you had a student." Azazel said.

"Well your eyes never seem to look anywhere else except my chest." Tsunade glares. "Just watch."

Sakrua took a deep breath before pulling her fist back. "CHA!" Swinging her fist down she broke the three boards.

"Give her a ring." Itachi said.

"Give her a ring." Azazel said.

"I'll give her a ring." Seth nods in agreement causing Tsunade to smile as Seth took out the Ring of Sun.

With some help and encouragement from Tsunade, they were able to convince Sakura to give them a chance.

"Bye boys and Seth tell your father to visit more often." Tsunade said.

"Tsunade he's a married man." Azazel teases when Seth bonks him on the head.

"Just stop Uncle Al." Seth sighs causing Tsunade and Sakura to giggle.

"That's my nephew." Tsunade smiles as they left.

Half a year had gone by since Seth began his travels and thanks to Sakrua and Itachi's help he was able to improve his fighting skills.

One night when they were setting up camp, Seth was nearby doing some fishing, but little did he know a figure was watching him from the shadows or to be more precise was looking at the bucket of fish he managed to catch.

As Seth caught a fish he turned to put it in the bucket only to see half the fish he caught were missing. When he looked around he found the culprit in the form of a nekomata girl named Blake Belladonna.

She had been on the run from Devils who wanted her for her special powers and couldn't figure out a way to shake them.

At least until Seth came up with a solution that was so simple it worked and all it took was a little black bow and the Ring of Storm.

While Blake was originally uncomfortable being a part of the group at first she grew to like the face that she had others looking out for her.

A year had gone by as Seth found himself face to face with a boy who had to be the toughest challenge he ever fought.

In a small clearing, Seth was panting heavily as orange flames came from his gloves.

"You're pretty good, I'll give you that, but not good enough." Emerging from the shadows was a boy his age with black hair and in his hands were two tonfas, this was Hibari Kyoya.

"Who says I'm done?" Seth said taking a fighting stance.

Both of them charge at each other and when Hibari swings his tonfas Seth leaps up and delivers a diving kick hitting Hibari in the head causing him to skid back.

"What do you think now?" Seth mocks.

"I'll bite you to death." Hibari glares before going in for another attack.

Nearby Itachi, Azazel, Sakura and Blake were watching with weird expressions.

"I'll bite you to death? What is this guy a vampire?" Sakura asks.

"That's just creepy." Blake said.

"Creepy or not the kid knows how to fight. Seth needs a guy like him around." Azazel said leaning against a tree watching the fight.

An hour later, Seth and Hibari were covered in bruises as they panted heavily. Hibari and Seth glared at each other before charging in for one final attack as they both nailed each other in the face, but in the end Seth was the one to fall to the ground while Hibari fell to his knees.

"Y-You're really strong." Seth groans.

"Been awhile since I met an opponent who pushed me this far." Hibari pants.

"What would you say if I could get you fights with people even stronger than me?" Seth asks getting his attention.

"I'm listening." Hibari said as Seth reached into his pocket and pulls out the Ring of Cloud.

With Hibari part of the group things were definitely interesting. He wasn't exactly cooperative when it came to teamwork and preferred to do his own thing but if it wasn't for that they wouldn't have stumbled upon something insane.

As Seth, Hibari and Blake were hiding behind some crates they saw some guys walking into an old building.

Following them in they discovered a secret church organization was gathering children and selling them to organizations for experimentation in hopes of ridding the world of devils.

Sneaking around, Seth saw a girl with long red hair almost the same color as Rias who was trying to stage an escape. This was Erza Scarlet.

"We need to put a stop to this." Erza whispers.

"But what could we do that's crazy enough to get all these people distracted?" Blake asks.

"I got this." Hibari walks up on stage towards the auctioneer.

"Ah it seems this young man is very interested in what I'm offering. How much are you planning to offer?" He asks when Hibari punches him in the face and smashes a lock off the cage causing the whole Slave Trade to erupt in panic and chaos.

"Hmm pretty effective." Seth said impressed as he picked a sword hanging off the wall and handed it to Erza. "Know how to use one of these?"

"You'd be surprised." Erza grins as together the 4 of them got everyone out safetly and the people in charge of the slavery were arrested.

"I can never thank you all enough for saving us all. You all posses such will and strength. I wish I could be as strong as you." Erza smiles.

"Well I might know a way you can help us and help you." Seth said getting her attention as he takes out the Ring of Rain. "As it just so happens this one favors those who are skilled with a sword."

Traveling to the mountains, they find themselves at a Temple dedicated to the rabbit goddess Kaguya.

There they met a shrine maiden named Hinata Hyuga whose family has watched over the shrine as the protectors and masters of the Gentile Fist.

But during their visit, a Stray Devil was on the loose in the area.

In the temple courtyard, Seth, Sakura and Erza were facing a giant spider shaped Stray Devil while everyone else made sure the area was secured.

As the Stray shoots a web at them, Erza slashes the web in half before Sakura leaped into the and kicks the Stray in the face knocking her to the ground.

From nearby Hinata was watching as the Stray fired a web tying the three of them up trapping them.

Gasping Hinata does the only thing she could think of and runs out punches the Stray in the side causing half her body to stumble.

"Hinata?" Seth said as she cut them free with Erza's sword.

"Quick before she gets up." Hinata said.

"You heard her." Erza said as blue flames surrounded her swords and yellow flames surrounded Sakura's fists.

Moving in Erza chops the Stray's legs off as Sakura grabs her arms and slams her to the ground.

Orange flames erupted around Seth's gloves as he punched the Stray in the face causing her to scream in pain before falling to the ground dead.

After seeing Seth and his group in action Hinata wanted to be strong like them so she could have the strength to protect the ones she loves.

Taking out the Ring of Lightning, Seth gives it to Hinata making her the last member of his group.

'I guess my job here is done.' Azazel smiles.

It had been over 2 years since Seth left on his journey to find his and things were kinda boring back home.

Today was Rias's 13th birthday and she was sad that Seth still hadn't called her to wish her a happy birthday.

"Hey Rias." Rias turns to see Tsuna walk towards her. "Happy Birthday."

"Thank you. Uh any word from Seth?" Rias asks.

"Sorry but no." Tsuna said causing her to sigh. "Here I got you a little something." Reaching out he held out a piece of cake for her, the same thing Seth usually did for her.

"Thank Mr. Vongola." Rias sighs taking it.

Little did she know at the front gate, 7 figures were approaching the mansion.

"Excuse me, do you have an invitation?" A butler asks.

"We're here for the birthday party." A male voice said.

"I'm gonna need to see some identification." The butler said as all 7 figures held out their hands and flames of red, yellow, orange, green, blue, indigo and violet appeared causing the butler to gasp.

Up on the balcony, Rias had a candle in the cake and lite it herself.

"Happy Birthday to me." Rias sighs when a figure walked up behind her.

"Happy Birthday to you. Happy Birthday to you. Happy Birthday dear Rias. Happy Birthday to you." A familiar voice said causing her to gasp as she turned around to reveal the figure taking off his hood to reveal a 13-year-old Seth.

"S-Seth?" Rias gasps.

"Thought I would say it to your face this year." Seth smiles as Rias ran over and hugged him happy to have him back.

Looking outside Tsuna smiles as he got a text from Azazel. "This kid is all good. Your problem now."

"Same old Uncle Al." Tsuna chuckles as Seth and Rias walk in to meet his new team and see them.

"Mom, Dad, Rias I want you all to meet my team." Seth said.

"Um thank you for having us." Hinata said.

"Nice to meet you." Sakura smiles.

Blake nods in acknowledgment.

"It is an honor to meet you both." Erza bows.

"We hope that we can help your son be the best he can be." Itachi said while Hibari wasn't even paying attention.

"Wow Seth you have quite the team." Rias said.

"No kidding." Seth smiles.

"By the way Seth, your mother and I have some big news." Tsuna said getting his attention.

"I-I'm pregnant. You're gonna be a big brother." Kyoko smiles causing Seth to smile.

After traveling to find his other members Seth returns home to see things were about to get crazy.