Hi everyone!!! It is NaruAi on your service... I'm such a big fan of detective conan and HS dxd fan but never found a crossover of them so i decided to write one myself... Hope you will enjoy it...This is a crossover between Detective Conan series and Highschool DxD series.

The main character will be Kudo Shinichi from Detective Conan series and the story will go as the protagonist encounters different situations in it.

Pairings:

Shinichi x Rias x Akeno x Grayfia

That'll be the main pairing in it if I don't change my mind.

Also not many characters will appear from Detective Conan series, so don't expect from me to suddenly bring anyone in it... unless the need arises.

It'll be totally different from your regular day stories...

Disclaimer: I don't own either Detective Conan or HS DxD; they belong to Aoyama and Ishibumi...

Chapter One: Turn of Life Events!!!

Shinichi's P.O.V.

Fool. That's what I was feeling like. A genius who read more than a thousand mystery books but still, a fool. Just watching my childhood friend, sister-figure Ran, falling from the edge of cliff and going to help her but couldn't save myself from falling... Yup definitely a fool. It's not like I regret saving her from falling. It's just that I was reckless, too reckless. But what could I do. What's done is done. I realized the very importance of life when I made contact with the ground. I had thought once that I would become a detective, earn fame, find someone who loves me and settle with her. But all of that had stopped that moment when I discovered this strange power within me. Power of Destruction. All of my life events were flowing in front of my eyes.

Just when I thought that all of this is going to end, I saw something. Or was it someone. But it was red, like crimson. The figure approached and bent towards me. Now when she was near, I could identify that she was a girl. She said,

" Such a poor fate for someone like you. Tell me boy, what do you want? Do you want to live? Or die like this? "

Whatever strength I had left, I lifted up my hand towards her.

"I want to live... Please save me..."

A small smile made it's way on her face and she said,

" Well then, live for my sake and enjoy your new life."

And then all the life within me, left and I died.

Rias's P.O.V.

'This boy is giving of a tremendous amount of raw power, but it gives a familiar feel'. I took out my set of evil-pieces and looked for the appropriate one to revive him. 'Maybe rook will be fine with him'. I took out the rook piece and started to chant,

"I, Rias Gregory, command you to be reincarnated as a devil under Gremory. From now on, you'll live as a devil for my sake."

The piece glowed and revolved around his body, but just when it was about to enter it's shape and aura changed to that of a mutation piece and it entered his body. I felt my connection to him, built.

I saw Enku, my brother's pawn running towards me. I told him everything and we decided to take him Underworld for now and explain to him what happened all here...

Normal P.O.V.

'What happened?' the boy thought when he woke after what felt like a long night. 'Where am I?' he thought as his eyes adjusted for the view. Something felt strange. He was feeling much better than the last time he was awake. In fact, he was feeling even much better that he could play non-stop soccer for 24 hours if he try to. He tried to get up but felt something pushed against his left side of body. He moved to that direction and the sight he saw almost gave him a nose-bled. Almost.

There was a girl about 12 or 13 years old sleeping beside him, pressing her, rather bigger than average, bust to him. That was not the case only. The fact that, she was as naked as the day she born, was the problem here. 'I think I'm in heaven' he thought with a massive blush on his cheeks. She had long crimson hair, darker than a red strawberry, creamy-white skin, and a figure that was not meant for someone like her age ones. His gaze moved towards her bust that was rising and falling every breath she took. She wasn't awake yet if the soft snoring coming from her was any indication.

" I'm with such a beautiful girl in bed and she's naked, and I'm also in my only shirt and shorts... Did I lose my V-card? " he thought out loud having a kinda thinking face with red cheeks. " Unfortunately that's not the case here handsome. " the girl beside him, said with a small smirk, her eyes opened. He jumped up fell from bed, scared of being heard out loud. "N-n-no it's not what you think it is. I was just wondering a possibility, nothing else..." he stuttered. 'Get a hold of yourself Kudo' he thought. The girl giggled and got up from her laying position. " Don't worry, I was just joking. " She stretched and yawned, the action causing her breasts to jiggle a bit and the lone boy in the room to support a blush. " A-Anyway, cover yourself with some clothes." he tried his best not peek. She got up and made her way to her closet, picked some clothes and went for a shower. Before she entered, " You can wear that set of clothes there. After that, leave this room. A maid will escort you to the breakfast table. I'll be there after my shower." she said with a smile.

Shinichi after changing his clothes was sitting on the breakfast table with other persons that he didn't know. At the Head of the table was a man that could be described the father of the said girl. He was a man in his mid thirties with shoulder-length crimson hair, blue-green eyes, a mild stubble on his chin part. He wore what seemed to be clothes for royalty.

Next to him on his left was a woman that could only be described as a true epitome of mature beauty. She had a little longer than shoulder-length chocolatey brown hair, voilet eyes, an nose-bled figure with a bust even bigger than his mother. She looked to be in her early twenties. She also was looking like some royalty.

To her opposite was a man that could be described as the younger version of the man sitting on the head table. Excluding the stubble, he looked to be in his early twenties. Beside him was a woman who looked be the exact same age as the woman earlier described. Instead, she had raven-black hair that reached to the back of her waist and green-emerald eyes. Behind them was a maid that had a beauty rivaled to the brown-haired woman. She had silver hair, tied in two braids in front of her shoulders. She was wearing a French-maid outfit with a white headband on her head and a small lipstick on her lips. She had a stoic face too.

There was a girl around his age sitting in front of him. She has long raven hair tied in a ponytail with an orange headband. She had violet eyes that held some kinda mirth in them. Next to her was a petite girl that had a stoic emotionless face. She had white hair and yellow eyes with two cat-pins on each side of head.

He was sweating with the fact that everyone was staring at him, the younger redhead trying to measure him somewhat. That's when the girl from the bedroom fiasco arrived and sat beside him on the chair. The Head gave the signal and everyone started to eat. He was wary at first but a little grumble told him that he needed food. He ate and found the food quite tasty.

After breakfast, all of them gathered in some room and sat on the sofas. He was sitting beside the redhead girl.

" What's your name?" she asked.

" Kudo Shinichi "

" Kudo? Are you somehow related to Kudo Yusaku?" asked the redhead man with the stubble.

" Hai... he's my otou-san "

" Hmmm... I see... well Kudo-kun there is something we need to talk." the little redhead girl said with a serious tone.

Rias, the girl told her name, explained the whole situation to him of what happened till now. To say Shinichi was shocked, would be an understatement. He would have faint if not for his strong wits and will. But he was kinda relaxed too to hear that he was safe and Rias protected him.

" Well this here is my family. They are my parents Zeoticus Gremory and Venelana Gremory. The couple there is my Onii-sama Sirzechs Lucifer and his wife Sophie Asmodeus. He was a Gremory too but left his name when he hold the title of Lucifer as the Yondaime Maou established their government. The maid here is the head-maid of the House of Gremory, Grayfia Lucifuge. She's my brother's queen in his peerage. " she introduced him to her family. He greeted all of them and vice versa.

Then she introduced her peerage, " She's my queen and my best friend, Himejima Akeno. The little girl is Toujo Koneko. She's a rook like you."

" Pleased to meet you~ "

" ...Welcome "

" Now tell me what kind of power do you have because I can sense a power similar to mine from you. If you don't have any then you might have some sacred gear." she said to him in some thought.

" I don't know about any sacred gear but I have a power that I've been kinda training with since I was... 8 probably." He said after a while of thinking.

If you have any then you can show us or demonstrate it's use." She told him.

He nodded,"Okay" and got up from his seat. He inhaled and closed his eyes. After a while he opened them bring forth his hand. Suddenly, a magic circle with strange ruins similar to that of a Gremory circle and from it shooter a beam of Power of Destruction towards a window, destroying it on impact or in other words, removing it's existence.

To say that everyone was surprised to see this is an understatement. Everyone was stunned. It was the exact similar to those of Gremory family signature power but more potent. Even it's color was different. Both the magic circle and the power of Destruction was an emanating dark purple that reminded them of the Bael Clan power.

Suddenly Venelana, after overcoming her shock, asked, " Young man, tell me did you know that you were a part-devil before?" He shook his head and she thought for a moment. After that he was told that there was someone from the Bael Clan in his family, maybe his Grand or Great Grandfather, that he didn't know.

After the whole fiasco, Rias, Shinichi and Sirzechs went to his house in the human world to explain his parents the whole situation. It was Shinichi's idea to tell them and he assured that they'll understand. His mother and father, Yukiko and Yusaku were shocked to hear it. His father then sighed and explained everything about his and his mother's heritage. To find that his mother once belonged to Shinto pantheon and one of their clans was shocking. After knowing everything his parents told Rias and Sirzechs that they'll train Shinichi in his powers so that he can protect himself and his new king from Now on. His mother also teased about how he and Rias would be a cute couple. After that Rias returned to the netherworld and promised to meet him the next day.

First Chapter finished here... Give your reviews everyone and I will try to improve it...