I noticed that there aren't any crossovers like this (infact, the only crossover was a challenge), and since I still need to relieve some stress, I decided to make this! A DP x HSDxD fanfic! Hope you like it!

Disclaimer: I do not own Danny Phantom or Highschool DxD. And that is the truth!

Prologue: The Black Feathered Phenex

The Underworld, home of unholy being known as Devils. Despite what people believe, the Underworld isn't that bad. There were no brimstones or pits of fire. No skeletons or lost souls. In fact, it was just like the Human World, the only difference was that the sky was purple instead of blue. The Devils were also not the exaggerated monsters people has pictured them to be. They even have rules to never harm the innocent.

Because of the last war, the population of Devils has decreased drastically. In order to make more Devils in less time, the Evil Piece System was created. By using special chess pieces, the King, the strongest of the peerage, could reincarnate any being into Devils. Human, youkai, angels. It can even revive the dead.

The rankings are; Queen, the second strongest of the peerage, the Bishop, who specializes in magic, Knight, who has incredible speed, Rook, whose body is as hard as rock, and Pawn, the weakest yet strongest member of the peerage.

Within the city of the Underworld was a castle that radiates majestic power, yet gives of a feeling of warmth at the same time. This was the home of the Gremory Clan, a clan both respected for their power, and favored for their kindness. Of all the clans in the 72 Pillars, they were the nicest Devils in existence, treating their servants like family.

Inside the castle, just in front of the massive oak doors, a young girl the age of twelve was pacing around, looking very impatient. She was very attractive, due to not only her blue green eyes, smooth skin and radiant red hair, but also due to her developed assets, which seemed too big for a twelve year old. She was wearing a black and red dress.

"Where is he?" she said, pouting a bit.

Her name is Rias Gremory, heiress to the Gremory Clan. She was currently waiting for her best friend, who was visiting today.

"Ufufuf. Getting quite impatient, aren't you, Rias-sama?" someone said next to her. She turned and looked at her other best friend. "Do you want to see your prince charming that badly?"

Akeno Himejima, a beautiful black haired, purple eyed girl that was just as attractive as Rias, teased. She was wearing a white kimono jacket and a red hakama, and her hair was kept as a ponytail by an orange ribbon. She was the same age as Rias and, like her, Akeno's assets were big for her age. She was also Rias' Queen.

"Danny-kun is late," a third voice said.

That voice belonged to a little girl of eight years old. She has silver hair and amber eyes. Like Rias, she also has an impatient look on her face. She was wearing a white dress with a kitty face on the front.

She was Shirone Toujou, Rias' first Rook.

"My, my, it seems our prince charming has captured our kitty's heart," Akeno teased, putting her hand on her cheek. "But remember, after Rias-sama claims him, I'll be next. Ufufufu."

"Akeno!" Rias exclaimed to her friend with a face that matched her hair color. Shirone was also blushing, but not as red as Rias.

Akeno would have teased them more, but then they felt a familiar presence outside the castle. Rias forgot about Akeno's teasing and dashed towards the door. She eagerly opened the door before the servant could touch the door knob.

Rias smiled happily when he saw a small group of people walking up the stairs. The group consisted of three boys about her age and a girl about seventeen years old. The girl has long black hair that has an ornate headband on it, and amber eyes. She wears a black kimono that revealed most of her cleavage, a yellow obi and yellow beads around her neck. She looked almost like Shirone.

The first boy has black, spikey hair with green highlights and black eyes. He was wearing a red jacket with yellow, scale-like patches, a pair of khakis, and sneakers. On his back was a skateboard that has a red dragon painted on it.

The second boy has purple hair that was also spikey and blue eyes. He was wearing a purple hoodie and a red shirt, jeans and red running shows. He was carrying a book that has a ninja mask on the cover.

The last boy was the one that Rias was looking at. The boy has black hair that has white stripes on it and bright blue eyes. Like the other two boys, his hair was spikey. He was wearing a dress shirt with a black bow tie, a blue, fancy jacket, black pants and black shoes. There were feather-like designs on his jacket, and on the back was a symbol of a majestic bird made of fire. He was holding a small box.

This was Danny Phenex, fourth son of the Phenex Clan. The purple haired boy was Randy Cunningham, his Knight, the other boy was Jake Long, his Bishop, and the girl was Kuroka Toujou, Danny's Queen and Shirone's big sister.

Rias ran towards Danny and gave the Phenex a hug. Danny's face turned red and he looked down as Rias let go.

"H-h-hey, Rias-chan," he mumbled, offering the box to Rias. "I m-made some cookies…"

Rias smiled widely as she took the box. These were one of the reasons she liked Danny. Unlike most of the Phenex Clan, who were very arrogant, Danny was the opposite of them. He was humble, kind and never treated his servants badly. It was like he was from the Gremory Clan. And Rias find his shyness very cute.

Plus, he makes great sweets.

He was also good at cooking, something that most of the males in the Phenex Clan looked down upon, since they believed that only women should be good at cooking. He also doesn't rely on the Phenex's abilities to heal all wounds and control over fire and wind, choosing to train physically.

He was the exact opposite of his older brother. Rias grimaced when she always thinks about Riser Phenex. She absolutely loathes the man. And she wasn't the only one. Her friends didn't like the way Riser was looking at them, especially at Rias, like some piece of meat.

It was no big secret that the two siblings didn't get along. Unlike the old saying 'opposite attracts,' the two despised one another. Riser didn't like Danny for being weak and shaming their clan, while Danny didn't like Riser for his arrogance and his treatment to others just because of their status.

"Thank you, Danny-kun," Rias said with a cute smile, causing Danny to blush again. Before the two could say more, Kuroka dashed passed the two.

"SHIRONE-CHAN!" she shouted as she tackled her little sister into a hug, rubbing her cheeks to hers. "I missed you soooooo much, nya!"

"Kuroka-nee, stop!" Shirone said in an embarrassed tone, trying to get her sister to let her go, but she had a strong grip.

"Ara, ara," Akeno said, enjoying the sight of Shirone's predicament. She then turned to Danny. "It's nice to see you again, Danny-sama."

"N-nice to see you too, Akeno-chan," Danny said with a shy smile. "And you don't need to call me 'sama.' We're the same age, after all."

"Ufufuf, how bold of you," Akeno said, confusing Danny. "Trying to get me to call you on such a familiar manner. It might make people think we're are lovers."

"L-L-LOVERS!" Danny and Rias shouted in embarrassment. The two boys chuckled at their king's expression.

"But if it's Danny-sama, then I don't mind being your lover," Akeno continued, a blush painting her face.

"Geez, bro," Jake said as he elbowed Danny, who's face resembles a tomato, on the ribs. "I wish I was in your shoes."

"Who wouldn't?" Randy said with a grin. "I mean girls wanting to be yours is totally bruce!"

"Not when one of them is a sadist," Danny murmured, looking on the ground.

Though he still smiled as he saw Rias shouting at Akeno, who was just teasing Rias. Shirone gave up trying to escape from her sister's hug, and started eating the cookies Danny made while Kuroka was cuddling her little sister.

Danny always looks forward to visit Rias and her friends/peerage. Except for his little sister Ravel, his oldest brother Ruval, his peerage and his parents, no one has ever treated him normally. It was always 'Phenex-sama' this and 'Phenex-sama' that. No one was calling him Danny. It was frustrating for him.

So it was very enjoyable to be treated like an equal from those who weren't his family. The group then went to Rias' backyard to hang out.

As they all enjoyed themselves, Danny saw Rias' beautiful smile that would give his stomach butterflies.

Her radiant smile, her bell-like laugh, her eyes filled with life, and lastly, her beautiful, red hair that looks like brilliant, red flames that dance along the wind.

But it wasn't her beauty that Danny liked about her, it was her kind, adventurous personality that made her different from the other heiresses that Danny had met on important parties.

It was one of the reasons he loved her.

He placed a hand in his pocket, fingering the vial of his tears.

Phenex tears were considered important to the Phenex Clan, as they contain their healing abilities. It was also an old Phenex tradition to give the one they love their tears, as it binds them together and can cure any wounds, even when the user is near death.

Danny was thinking about giving his tears to Rias, but he was too nervous to do it. This must be what Ruval felt when he gave his tears to Jazz, his wife.

"I will give my tears to her," Danny thought as he let go of the vial. "But not today."

His thoughts were brought back to Earth when something wet hit his face. Shaking off the shock, he looked at his Rook and Knight, who were holding blue balls that were probably filled with water.

"Ha! How'd ya like my Ninja Water Balls?" Randy said as he and Jake high-fived.

Danny grinned as he raised his hands, making two fireballs that had their faces on it. Both of them paled.

"Hope you like my fireball special!" Danny shouted as he fired at his friends, who ran away.

The rest just watched as the boys dodged Danny's fireballs, laughing at the scene. It was just another fun day for them.

And that's all, for now. I know this is different from the ol' DxD fics you may have read before and some characters are OC, but this is an AU, so there will be some difference. And here are the possible members for Danny's peerage.

King: Danny Phenex

Queen: Kuroka Toujou

Bishop: Jake Long, Jellal Fernandes

Knight: Randy Cunningham, Erza Scarlet

Rook: Natsu Dragneel, Naruto Uzumaki

Pawn: Train Heartnet, Hinata Hyuga, Gaou Rikiya, Raven, Starfire, Mizore Shirayuka, Lisanna Strauss, Asia Argento

Mutated Piece: Moka Akashiya

Hope you like the choices. I'll work on Rias Peerage next chapter. Also, if you're curious on how Danny has Kuroka as a queen, it will be revealed in one of those dramatic flashback things. And here is the harem. It won't be Highschool DxD without the harem.

Danny's Harem: Rias, Akeno, Kuroka, Asia, Mizore, Raven, Starfire, Moka, Shirone, ?(I might add more later on.)

And one last thing, Issei Hyoudou will only be a side character, the kind that's used for comic relief. It's not that I don't like him, I just don't have any ideas for him. Well, that's folks. Feel free to suggest for the harem, peerage for Rias, or comic relief stories for Issei. Well, see you later!