Summary: Born a devil, raised to be a human, a young boy was saved by his mother from the darkness that was haunting him and lived a happy life in the light. However, no matter where the darkness always follows him and his devil side reawaken, this giving him an important lesson. There cannot be darkness without light, thus making him to realize that it was time for him to embrace both of his sides, the darkness of the devil and the light of the human heart.

Ren 'Dabi' Lucifer will take the world by storm and he shall show anyone who dares to stay in his path that no matter how small fire inside someone is, you will always get burned

Rated M for Mature

...

Chapter 1: New Life, Flame Rise

AN: I'm back and here's a new crossover story that I'm trying, doing something new never hurts and this OC would be interesting for you to enjoy. Now sit back, read with popcorn and enjoy the show :)

Japan

In Japan, around a small town, we see a black limbo driving to a great house of the state that was the home of the Aoi family.

The first was incredibly beautiful women with very long silk-like blonde hair that almost touches the floor, gold eyes, very large breasts, and a very buxom figure. She wore a simple dark blue sleeveless top, a long white skirt, and black dress shoes. She also has a white sun hat and a crutch for her left leg that had been damaged during an escape. This was Cassandra Aoi.

The second was a young boy with white hair as the snow and blue eyes that sparks like fire. He wore a black shirt, white pants, and black running shoes for a kid of his age. This was Ren 'Dabi' Aoi who is Cassandra's son and has a full name but doesn't like to talk about it at this time.

Cassandra and Ren had escaped a relative that was the embodiment of evil and sin which to this day the young boy was hurt and shy around other people due to what happened. He was burned by that evil person but his mother saved and healed him but the scares of what happened live inside of him. The young woman has helped her son a lot and hopes that this trip home would help a lot.

Cassandra hadn't been in touch with a good number of her family but mostly with her father and sisters. Her brother and sister-in-law not so much but have heard from her father about their daughter who can be a proud Pandora that rivals her aunts. She and her son would meet the grandfather first before the others which they can see him on their way to the house they are staying in.

The man that in front of the house was an elder man, an old man of undetermined age. He has amber eyes and his formerly jet-black hair has whitened from age. He is of average height. He has a very serious demeanor and gaunt-looking facial features. He is considered handsome despite his age. He wore a white suit jacket, blue slacks, and a blue dress shirt with no tie. He usually rolls up the sleeves of his shirt when not wearing a jacket. He sometimes wears a white, ankle-length lab coat over his suit. This was Gengo Aoi, a doctor that is head of a scientist factory to which he is the world's top Nova expert, father of Cassandra & a good number of children, and grandfather to two which might be three later.

Gengo smiled when he saw the limbo pulling in that had his eldest daughter and new grandson that was going to meet. He knows all about what happened from what Cassandra had told him and vowed to make sure that Ren stays safe here at the Aoi household in Japan.

The limbo came to a stop, having Cassandra coming out with her crutch to help her stand and later Ren exited behind his mother with their bags.

"Cassandra, my daughter," Gengo greeted.

"Father," Cassandra greeted back before smiling a little as she felt her son hiding behind her due to his shyness and little fear of new people. She doesn't blame him and would help her son out of what happened.

"I take it this is your son Ren?" Gengo asked with a small smile on the boy's shyness.

"Yes, this my son Ren 'Dabi' Aoi," Cassandra said, rubbing her son's head that ruffles his hair a bit and calm him down.

"Dabi huh? I never imagine you would pick that as his middle name. Or it's a nickname for his strange abilities?" The elder man asked.

"Most of it and no I didn't pick that name from that hero & villain anime. I can never understand why anime inspires people to do odd things," The blonde-haired woman commented.

"It sometimes does but anyway, let me show you two inside and the home you would be staying. After setting in, I would like to introduce you to your brother, sister-in-law, and niece for dinner."

"I see then."

Gengo sighed at that, knowing the reasons for that but would move on. He had Cassandra and Ren followed him inside of the house which was three floors, a good number of rooms for rest, living room, kitchen, and a training room that was requested for the young boy to train/control his powerful fire abilities.

After relaxing in, we see Cassandra and Ren enjoying lunch together after saying their goodbyes to Gengo who need to head back for his head and would meet the pair at dinner with the rest of the family.

"Today and for now on Ren, everything will be alright," Cassandra said with a smile on her face as she held her son who was relaxing in her arms and felt at peace.

"I hope so to mom," Ren said, hoping but knows that his mother was right as life here would be a lot better than his past.

Mother and son enjoyed the rest of the afternoon in peace and quiet, knowing that their troubles were done and now a new start of their life would be better.

Time Skip

Throughout the past months that went by, things were interesting, to say the least. Cassandra and Ren have lived a good life in the Aoi household.

Ren had got to know his grandfather who Gengo enjoy looking after and half-cousin Kazuha who spark life to him. He had loved this life here and find enjoyable. The young boy also trained as his magic and powers were rising up which he needs to train his body and mind to master his abilities and Sacred Gear.

When good comes, some bad too.

Ryuuichi and Orie seem to show some bad thoughts to Cassandra which she blocked them and demanded to know why she had a son. This caused Ren to glare at them and told them to back or burn which scare them as they small blue flames sparking out of his eyes.

It got worse when Orie had a problem in carrying her child and Gengo had found a way to save the child by giving it to Cassandra who would birth her nephew or niece as her surrogate or half child. She had told her grandfather of how Ren was born and was done again to save another child's life but this time with science instead of magic.

A few months later, Cassandra give birth to heathy baby boy

Orie tried to take the son back but would cause the baby to cry and missed his mother, the one that give birth to him. She was getting very upset and was losing her mind when seeing Cassandra the child that should have been hers which was getting worse and decided to act on her own. She decided to kill the child, seeing him has not her son and the doll was nothing.

Kazuha had saved her baby brother by killing Orie with a kitchen knife that was left out and was shaken on what she had done. She cried in Ren's arms who saw what happened and helped her heal for what she had done, no one shouldn't take actions like that but what's done is done.

Ryuuichi started to lose his mind of the death of his wife and truth of everything, Cassandra and son coming in, losing his life, finding out the truth of his wife's death, and the whole truth of the Pandora to his family.

Gengo had told his son the truth, hopping it could help him heal and understand that the world is bigger then any can think.

However, that night had a bad storm coming and powerful flame awakening.

It was night, raining storm was taking place outside of the Aoi household. One of the rooms had Kazuha watching over her baby brother with Ren awake and smiled at the scene between the two. He know he shouldn't be awake at this time but needed something to drink and check on his mother as she had been up and worn out from taking care of the young one.

Before Ren could walk in the living room, he saw his mother talking with Ryuuichi which stopped him in his track and saw a talk was happening. He then saw the black-haired cubbing the blonde's chin and then shock him when he saw his uncle attacking his mother.

This attack caused Ren to have his eyes widened and started to replay the memoires of what happened to another family relative that was abuse and attack like this

This attack caused Ren to have his eyes widened and started to replay the memoires of what happened to another family relative that was abusive and attack like this. Like he was attack and won't stand for this as the flame was burning within.

Ryuuichi then started to rip Cassandra's top and close on unleashing his rage onto the doll for all the pain she cause to him but wasn't so and was stopped when...

A powerful wave of blue flames was launched towards Ryuuichi who looked up to see the attached and screamed in pure pain of the fire burning his whole face off. He got off the blonde who was shock on what happened and who started the fire.

Ryuuichit hen ran to the window to have the rain take the flames off as they were surrounding him but failed and soon fall to his death, ending the pain and was free at least.

"Ren," Cassandra spoke in concerned and rushed to see her son.

Ren was shaking on what he had just done. His hands were covered in blue fire, not harming him and was shock on what he just done. He didn't mean to, it just happen as he didn't want to his mother be harm again as she is the nicest person in the world and shouldn't be touch like that.

Cassandra saw the shock and quickly hugged her son, forgetting what happen and focus to care for her son.

"Let it out, I'm here Ren. I'm not going anywhere," Cassandra said, softy.

Ren started to cry in his mother's shoulders and all the pain was washing away at least.

Mother and son stay with each other for a good awhile until the next morning came and new path has start for the family.

A new path were Ren would learn to have both light and darkness within him but won't be alone or on his own for this new path ahead of them.

The Dragon has awaken and path has open up forward.

...

ANN: Next Chapter, we have our her grown up, learn about his origin of light and darkness within him, and come cross Devils. Now for bio and Pairings:

"It's better to use a small group of elites to test the strong ones out and flush the weak out. The first thing we have to do is take away their sense of peace and show them a new game begins." Ren in the first arc.

Ren 'Dabi' Lucifer-Aoi

Nicknames:

The Storm Dragon

Silver Dragon Emperor

Silver Dragon of the Morningstar

Dragon of Fire and Ice

First Male Pandora

The Blazing Pandora Dragon

Hair: White (Dabi style)

Eyes: Blue

Age: 18

Likes: His family, His girls, Reading, Quiet Places, Training, Fighting Strong Opponents, and Cats/Foxes.

Dislikes: His grandfather, Power-hungry bastards, Racist, Those that look down on him or call him weak, Sexual Assaults aka Rape, and harming those he cares about.

Family Relatives:

Lucifer (Great Grandfather)

Lilith (Great Grandmother)

Rizevim Livan Lucifer (Grandfather)

Unnamed Devil Father (Dead)

Unnamed Human Mother

Vali Lucifer (Older Half-Brother)

Cassandra Aoi (Second Mother)

Kazuha Aoi (Half-Cousin, Girlfriend)

Kazuya Aoi (Younger Half-Brother)

Aoi Family (Related)

Race: Half Devil & Half Human (Pandora and Limiter), Quarter Dragon

Powers and Abilities:

Inhuman Abilities

A large Number of Magical Abilities

Dragon Force and some features like fangs, claws, and eyes sited

Demonic Magic (Some elements but main is blue flames and ice)

Dragon Slayer Magic (Poison, Fire, and Ice)

God Slayer Magic (Thunder and Lightning)

Demon Slayer Magic (Fire)

Master Swordsman

Master Marksmanship

Flight (Flame Wings and Bat like Wings)

Equipment:

Raging Storm, Dragon's Wrath: It gives the user the power over fire and ice to rival Gods and Satan Devil's.

Blaze Dragon (First Balance Breaker, pure flame control)

Half-Fire & Half-Ice (Second Balance Breaker, Holy Ice and Demonic Flames)

Note: Ren voice actor would be Dabi English Dub, yes.

Theme Songs:

Fake by the Chaos Agent

Save Yourself by My Darkest Day

Leave It All Behind by Cult to Follow

Quotes, not in order:

"Play with fire, you get burnt."

"Both of you, shut it. You too loud."

"Just make another one of me, we need to keep them busy just a little longer."

"This place was to be our escape route and hard to get in due to wall of flames and poison gas but the gas is gone. [Sigh] Things never go to plan but that's why I make backup plans to my plans."

"It's been a long time, big brother."

"Shut your mouth, crazy brother of mine. You act like a battle manic and little out of control. And they call me a battle manic."

"Don't let your guard down...or you get burn!"

"My reasons for fighting huh? I have been asked that many times but the same answer as always Issei. I fight to protect those I care about with all my strength and burn my enemies until they are nothing but ash."

...

Pairings:

Ren's Harem:

Freezing: Kazuha

Satellizer

Elizabeth

Chiffon

Arnett

Amelia

Roxanne

Rana

DXD: Sona and some members of her peerage

Serafall

Kuroka

Yasaka

Gabriel

Xenovia

Ingvild

Tiamat

Akeno

Koneko

Ravel

Maybes: Lucy Aoi to the Valkyer Sqard, Holly Rose, and rest up to ideas which need reasons on how the girls fall for Ren.

Side Pairings:

Issei x Rias x Asia x maybe one more

Vali x Creo x Kim

Kazuya x Ganessa