All right, this will be my first fanfiction ever. And what better to start off than to do a challenge from a good fellow by the name of Code-Emperor07, and this is going to be a fun one. Here's the challenge.

Challenge: Highschool DxD/Maburaho Crossover – Magical Devils

Takes place after Kazuki uses his last spell counter, and reincarnates as a devil. This also takes place before Highschool DxD canon. He is Reincarnated by Rias, and transfers to Kuoh Academy along with Yuna, Kuriko, and Rin, and Yamase joins them a bit later. He replaces Issei and gains the Boosted Gear. But he also gets the Sacred Gear, Ten Commandments, which is the very same sword from Rave Master. This is a Harem story of course.

Also, all characters in Maburaho are owned by Toshihiko Tsukiji, and all characters in Highschool DxD are owned by Ichiei Ishibumi. So with that in mind, here we go.

Magical Devils

Chapter 1 – From a Wizard to a Devil

This is Aoi Academy, a place where magic is the way of life. It is the only school where people use their magic abilities to achieve success in their academics. The people here have a different degree of magic and a set number of uses, which also determines their social standings. Once someone used up all their magic, they'll turn to ash, and will be scattered into the winds. One particular person, unfortunately, is at the bottom of the standings: Kazuki Shikimori. He is a 2nd-year student, and he is in one of the most troubling classes of all: Class 2-B. An average person usually has a little over 100 magic uses. Most of the elite has over 1,000 magic uses. Kazuki? He has 8 uses. Because of that, he has serious social problems, and many girls would not notice him, and he would usually fall into depression. However, all of that changed when the school doctor, Dr. Akai, notices something different about him.

Everyone was shocked to find that of all people, Kazuki is a descendant from not only the most powerful of eastern mages, but the most powerful of western mages. With those two bloodlines fused up into him, he is actually capable of wielding nearly omnipotent powers, making him the most powerful person in the world. Along the way, 3 particular girls jump in to try and obtain his genes. First, Yuna Miyama, a pink-haired girl who claims to be his 'wife', and has the characteristics of a housewife. Second, Kuriko Kazetsubaki, a wealthy, beautiful third-year student who is very strong in terms of magical count, and attempts to flirt with Kazuki and tease Yuna whenever she can. And third, Rin Kamishiro, a swordswoman who has a reserved and dignified personality and always dresses in a samurai-style kimono that is suitable to her warrior nature, and is ordered by the head family to secure Kazuki's genes in order to ensure the Kamishiro family's dominance, which according to Kuriko, has been weakening because of the number of branch families. However, she would prefer to kill Kazuki than be forced to marry someone who, in her words, has bad grades, no athletic prowess, and no redeeming values.

Kazuki, however, is a kind, good person and is sometimes selfless, and helps the girls by using his magic, even when that means that he runs the risk of turning into ash. Kazuki's magic is referred to as the most powerful magic in the world able to achieve miracles. Due to Kazuki's kindness, his spell count begins to drop as he uses his magic on behalf of each girl.

First by making it snow in the middle of summer to cheer up Yuna, now that he remembers about him and Yuna's childhood memories. Second by pulling Yuna out of a vortex that also merges the boy's and girl's dorms together. Kazuki uses his magic again to destroy two Behemoths in order to save Kuriko, who was unable to defeat them, in which at this point Kuriko begins to develop feelings for him. And then, Kazuki reverses time to save Rin's homemade box lunch, and even eats her lunch, and gives his honest opinion on how horrible it is, making Rin softening her approach towards him, and even develops feelings of her own. He also uses it to save his 2nd childhood friend, Chihaya Yamase, after a monster summoned by Kazuki's classmates appeared at the school festival. Not long after, Yuna accidentally releases an incurable retrovirus on herself which also creates a doppelganger of her with the opposite of all her qualities (ex. the real Yuna loves Kazuki, the clone wants to kill him). Kazuki uses his sixth spell to obliterate the clone. Finally, Kazuki uses his last two charges in order to save Yuna's life from the virus.

Each of these events left an impression on the girls, and gradually fall in love with him, and they attempt to keep Kazuki from using any more of his magic and eventually search for ways to increase his spell count. However, their attempts fail when Kazuki uses the last of his magic to save Yuna from the magical retrovirus. And now, we're about to see Kazuki, who may be saying his last to Yuna, knowing that he'll turned to ashes… or so we thought.

"Sorry that I couldn't keep my promise…", said Kazuki, as he began to disappear.

"Kazuki… KAZUKI!", yelled Yuna as she thought she could never see him again…

Just then, a red magic circle appeared on the bottom of the floor, and someone began to rise up from the summoned circle. Yuna, Rin, and Kuriko were surprised by this sudden appearance. It was a young woman who appears to be in her late teens/early twenties with a buxom figure, a light skin tone, and blue-green eyes. Her most distinctive feature is her long, crimson red hair that reaches down to her thighs, with a single hair strand (known in Japan as ahoge (アホ毛), or idiot hair) sticking out from the top. Her hair also has loose bangs covering her forehead and side bangs framing her face. She also wears a girls' school uniform, which consists of a white long-sleeved, button-down shirt with a black ribbon on her shirt collar worn under a black shoulder cape and matching button-down corset, a magenta skirt with white accents, and brown dress shoes over white crew-length socks.

Thinking as if this new person is a threat, Rin summoned her sword, and Kuriko got a few talisman spells ready. "Who are you, and how did you get here?!", asked Rin. "Oh my," said the young woman. "Trying to fight me, who is trying to save Kazuki?" "How did you know his name?", asked Yuna. "I've been observing him, and his magic surprises me, so I've decided to save his life, but it comes with a price."

"What is it?", asked Kuriko, still feeling suspicious. "For him to become my servant, as a Reincarnated Devil," said the young woman.

"WHAT?!" they all yelled. "I won't let you turn him into a Devil!," yelled Rin, as her magic intensifies on her sword. "Don't worry. He won't be turned into a Devil that many of you think. In fact, please don't think of us as evil people, as we mean no harm to human. Oh! I almost forgot to introduce myself. How unladylike of me. My name is Rias Gremory. Pleased to meet you," said Rias.

"Rin Kamishiro", said Rin. "Kuriko Kazetsubaki", said Kuriko. "Yuna Miyama," said Yuna. "And I suppose the one who disappeared into ashes is Kazuki Shikimori," said Rias. "Yes!" said Yuna, who was still surprised. "Now, do you want me to resurrect him, or leave him for dead?", asked Rias.

The three girls huddled, and they told each other on what they are going to do. After an intense 15 minutes, they got out of the huddle as they have made their decision.

"Yes, please resurrect him, so I can be with him again," said Yuna. "Very well. You will not be disappointed. Now…", said Rias, as she gathered all of Kazuki's flying genes, and summoned on what it appears to be a chess piece. "Is that a pawn piece?" asked Kuriko. "Very good, Kuriko," said Rias. "I'll be resurrecting him as a Pawn." "What does that mean?" asked Rin. "That means he'll be in my peerage," said Rias as she inserted a Pawn piece inside one of Kazuki's genes, but nothing happened. Rias was confused about this, so she decided to try insert another Pawn piece in another one of his genes. Again, nothing happened. Rias then inserted more Pawn pieces inside Kazuki's genes, and by the time the 8th and final Pawn piece was inserted…

All of Kazuki's genes are began to combine, and then came 2 legs, a mid-body, and then 2 arms, and then the face of the man that Yuna, Rin, and Kuriko wanted to see most.

"Kazuki?", asked Yuna. Rin and Kuriko was also hoping that is was him.

"Yuna? I thought I was supposed to disappear…".

Yuna, Rin, and Kuriko ran to him and hugged him. "KAZUKI!", they yelled as they were delighted to see him again. Kazuki was also happy to see them, but he was confused on how he wasn't dead yet. He then noticed the crimson-haired girl. "Who are you?," asked Kazuki. "Your savior, or better yet, your master, Rias Gremory. Pleased to meet you," said Rias.

"MASTER?!," they all yelled.

20 minutes later…

** At Class 2-B :( **

"WHAT!" the classmates of 2-B yelled. "How can Kazuki be still alive?!," asked Kazuki so-called moronic friend, Yokihiko Nakamaru. "I heard that another girl has resurrected him," said another troublesome classmate and Yokihiko's second-hand freak… I mean partner in crime, Kazumi Matsuda. (Boy, rumors do spread quickly, don't they?) "BE QUIET, YOU CLOWNS! I NEED TO BEAT SIX-FACED SAL IN THIS LEVEL!," yelled Kaori Iba, their laziest teacher in the world, who's not even trying to teach the class half of the time.

Sure enough, the door opened, and came Kazuki himself, which shocks the class and the teacher, and then Yuna, holding his left arm, and Kuriko, holding his right arm, and then Rin. Just as they were about to say something…

"Oh my. So this is their classroom that they told me about," said a new voice. They looked back, and when they did, they saw the crimson-haired beauty Rias Gremory.

"WHO IS THAT CUTIE?!" yelled the boys. "She looks more beautiful than Kuriko!", another one said, only to get to his face badly damaged by one of Kuriko's talisman spells.

"Pleased to meet you all. My name is Rias Gremory," she said. The boys are delighted to see another beauty in their class, and even the ladies were envious of her features, but they noticed that she's wearing a different school uniform. "Wait a minute," said one of the girls. "You're not in this class, are you?" "No, I'm not, but I do have some news to tell you," said Rias. What's about to happen next is going to change everyone's life. (Get your earplugs ready!)

"Kazuki is going to be transferred to my school, Kuoh Academy the following morning, and so will Yuna, Rin, and Kuriko."

Eerie silence fills the air for a few minutes.

**Cut to Dr. Akai's office!**

Dr. Harukai Akai just got back from the principal's office, hearing that not only Kazuki is still alive, but has been reincarnated into a Devil, and will be heading to Kuoh Academy. He knows that he won't leave this type of stone unturned. "Looks like I'm going to go there, too. Although it'll be troublesome that I won't be seeing Ms. Iba anytime soon. However, I do have a feeling that her class is about to find out that…"

"WHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHAAAAAAAAAAAAAAAAAAAAAAA AATTTTTTTTTTTTTTTTTTTTTTTTTT TTTTTTTTTTTTTTTTT?!"

Then the school completely shook for a few seconds. It's as if this was a 4.5 Earthquake in North California.

"Looks like they found out," sighed Dr. Akai, getting ready to pack his stuff. He'll be going ahead to the Academy, hoping to surprise Kazuki and the others there.

Kazuki received a LOT of death and evil from the guys of 2-B, but Rias' killer intent stopped the boys from making harm to Kazuki, and the girls and the teacher are surprised that Rias stopped the boys from trying to kill Kazuki in such a short amount of time.

** After school **

"Oh. So, you're transferring?" asked Karei Hirosaki, who is always seen wearing a sexy, black funeral outfit for some strange reason. She is the manager for the boy's dorms for both boys and girls.

"Yeah. Even I didn't expect to be transferring," said Kazuki. "At least we'll be transferring together!" said Yuna, grabbing his arm. "I wonder how our families will react to this," said Rin. "No need to worry. My brother and I contacted each of your families, and they accepted it," said Rias.

"Really?", came a new voice. It was a ghost girl that came out of Kuriko's large chest. The ghost girl's name is Elizabeth. She thought that Kuriko is like her previous mom, and because of her, the boys and girls dorms became one. "I see that you've have a familiar with you," said Rias. "This is not my familiar, Rias. This girl somehow clung onto me ever since that last project," said Kuriko. "What last project?" "You don't want to know."

"Oh, and once we get there, I've already booked the dorm for you, and that little ghost girl will also attend the school as well," said Rias.

"Really?" asked Elizabeth and Kuriko. "Yes. I've decided to make things more interesting with this little group," said Rias.

"2 questions before we sleep. How will we travel, and why did you say dorm instead of dorms?" asked Yuna.

"To answer your first question Yuna, we all transport by my magic circle. And to answer your second question, you will all stay in the same dorm, as we have enough bedrooms and bathrooms for all of you," said Rias.

Another silence. You know what that means kids.

"WHAT?!" they yelled. "Oh, and Kazuki, your other friend Chihaya is already heading to the Academy as we speak," said Rias.

"How did you know my other friend?!" asked Kazuki. Rias only smirked at him, but she also noticed that Yuna, Rin, and Kuriko were looking at her suspiciously. They may not trust her fully, but they are going to at least play along and see on how this holds out.

** Meanwhile**

"Oooh! We'll be together again, just like we did when we were little!" said Chihaya Yamase, 2nd childhood friend of Kazuki, who also made the same promise as Yuna. Chihaya is on the train en route to Kuoh Academy, to where things are going to get VERY interesting from here on out.

To Be Continued…

Next time on Magical Devils...

Kazuki and his friends all arrive at Kuoh Academy, and he is about to discover on just how strong he really is when summons not one, but TWO Sacred Gears that will give everyone quite a shock! Also, with 4 girls all in Kazuki's dorm, the girls will be very aggressive on who's going to seduce Kazuki now that they don't have to worry about his genes anymore. Plus, the popularity of Kuoh Academy is going to change dramatically that you folks will have to see to believe!

And done! That's the first chapter from my first fanfic ever! Sorry about the info dump at the beginning, but since I haven't watched that in over 6 years, I had to refresh my memory at that point. Anyways, this is going to be a Super Harem story, and they'll be a few original chapters here and there, but first, here's the list so far.

Kazuki's Harem: Yuna, Kuriko, Rin, Chihaya, Rias, Akeno, Koneko, Asia, Xenovia, Irina, Kuroka, Ophis, Ravel, Rossweisse, Serafall

Now, if you have any more girls that you want to add, let me know via review. If you want any Fallen Angels to be added to the harem, this is your only chance to say it in your review now, because in the next chapter, I could set stone to the list, but I'm not sure yet, and I could give you another chance to add any Fallen Angels in the 2nd chapter.

Also, be on the lookout for Quickie Quizzes. It's based on the current chapter, and if you are correct, you'll win virtual cookies. Get a question wrong, and whatever Quickie cookies you have accumulated, it'll all be lost by the virtual Cookie Monster!

So, here's the first Quickie Quiz.

Quickie Quiz:

1. What game was Miss Iba playing?

Get this right, and you win 20 virtual cookies. Also, lots of fanservice will be involved!

With that in mind, read and review, and no flames!