Author's notes: okay...here, I present to you, the reader, my VERY FIRST crossover fic! It's a crossover of Get Backers and Dual Parallel Trouble Adventure...I dunno how this kind of idea got to me...I was watching Dual at home when a bunch of 'what if...?' questions popped in my head...so..here!!! oh yeah...just a brief background...this happened AFTER the two worlds have already collided...Genmu wasn't destroyed so he's in full working condition...D is in her true form...um...the RaRa army found some new artifacts so their back to fighting each other again...oh yeah...Mitsuki Rara is on the GOOD side...fighting her mom, the NEW miss RaRa... okay...that's enough already...on with the story!!! :)

Somebody mysterious

By: shimo hyozan

"okay, I think that's the last of them"

"I guess so...RaRa fled off already..."

"yeah...as usual...sulking to herself..."

"hmph...serves her right...pathetic fool...and she's SUPPOSED to be my mother"

Cheerful laughter then followed thereafter.

This was the conversation of the four core robot pilots, Sanada Kazuki, Sanada Mitsuki, Sanada D and Rara Mitsuki, respectively. They had just defeated approximately 50 robots, of which their cores were excavated from another ancient civilization.

"c'mon, let's start heading for home...I'm exhausted!" Rara Mitsuki said.

"yeah, I agree!" D said enthusiastically.

"then, let's go! Kazuki?" Sanada Mitsuki said.

"uh...yeah" Kazuki answered then followed his companions toward the base.

While walking the familiar path, accompanied by the sight of countless damages yet zero casualties, Kazuki noticed the wind that came across them. Even though he couldn't feel it, he noticed how the wind picked up light debris like dead leaves and dry paper. He tried to relax, as he was too, exhausted.

Today's battle called for lots of teamwork and at the same time, concentration. They were slightly taken aback by the sight of 50 or so new robots that took lots of effort in defeating all of them. It was a good thing that they're already four working hand-in-hand against an old foe, who still doesn't want to give up.

Sanada Khan had already tried his best to convince Rara Ayuko into joining forces and conquering outer space, yet being hardheaded, she wanted to prove to him that the Ruins civilization is too weak and therefore, she will beat him into conquering outer space and the world. Now, they're back to how they started, yet, the Rara army is reduced by five, Mitsuki, the three RaRa girls and the supervisor, Heiyan. Even so, Rara Ayuko didn't want to give up. She has now taken the post as Ms. Rara, who give out the 'coming soon' messages and she's also the commander-in-chief, doubling her responsibilities. Still, she didn't mind because her goal was to beat Sanada Khan.

As Kazuki was trudging a little behind his companions, he heard an unfamiliar sound. Even so, it felt very pleasing to the ears.

"What...is that?"

He has never heard such beauty in sound alone.

"What...or who is making that beautiful music?"

As he was silently appreciating the beautiful music, he didn't notice that he had stopped walking and was standing still, being left off by his companions.

Not until...

"Kazuki-san!"

He snapped back to reality.

"...eh?"

"Kazuki-san, what's wrong?" it was D who noticed him.

"ah...ah...I just heard something just about...now"

"really? I didn't hear anything"

"then it's alright. D, why don't you guys go ahead, I'll catch up in a while, Okay?" and he started running off the opposite direction.

Sanada Mitsuki noticed this and shouted at him "Idiot! Where are you going?!?"

"Somewhere...I'll catch up with you guys later! See you at the base!!!" and he jumped off towards the sky.

"Stupid idiot...don't get lost" Mitsuki said to herself and continued towards the base.

He landed on the debris-filled ground beneath him.

He stopped a while and listened attentively...

...hoping to hear at least a gist of it.

"where's the sound?" he questioned himself.

Then, he heard it, a faint note.

He perked up and stood still.

More and more notes were heard.

He started following the music.

He tried his best to listen to it, while trying to navigate through the maze of buildings. The sound grew louder and clearer as he approached.

He suddenly stopped, seeing an odd looking building which was the source of the music.

The building looked like a building where many other buildings collided with it. Buildings were sticking out from the sides of the said building.

He had never seen this building before.

"what's this? a parallel building?" Kazuki said to himself. He examined the building from the bottom to the top, where he saw...

...a beautiful young lady...

...with long, brown hair...

...in a pink kimono...

...plucking away in a koto a/n: Japanese harp...

all Kazuki could utter was...

"she's so beautiful..." as he was captivated by her beauty

A/n: that's it for this chappie! Don't worry! I'll definitely continue this!!! it's TOO cute!!! Ne?