Author Notes: A new story. Pairing involve Black Rock Shooter and Dead Master/Mato and Yomi.

Disclaimer: I do not own Black Rock Shooter, they are own by Huke.

Obsidian Heart

Chapter 1: Kiss

Mato Kuroi woke up with a start, she did not remember what she dream about but whatever it was, it made her feel uncomfortable. Slowly she rose up from her sleeping position. Her dim room indicating that it was way early for school so she had more time to sleep. But unfortunately because of the dream (which she still could not remember), she was not able to get some shut eye. Instead she looked out of her window and as she expected, it was still dark outside. The cascade sang through the night and Mato just silently listen to them.

She looked up at the night sky and was a bit surprise to see several stars shining bright. Mato admired them, she did not know why she likes them very much. It was just her favorite thing since they day she was born. She reached a hand up at one of the shining stars, imagining herself catching them with ease, then she clenched her fist tight once again imagining that she had caught one of them. Oh she wish she could catch one, so that she could gave it to Yomi–

Yomi

Mato's eyes widen, she just realize what she had been doing for the past few days now. Yomi, she was always been thinking of Yomi. Always and always following her around like a puppy following its master. She place her hand that had reach the stars to her forehead. For some reason her head started to spin around and her heart races. Its so different then when she played basketball. Of course her heart races and her head felt dizzy when she played basketball, but this is Yomi. A person Mato knew for almost two years now.

"I wonder, what is this feeling?" Mato asked herself. She did not know what it was but the feeling just grew stronger for each passing days. Without another word, she got off of her bed and exited her room. She needed a cold glass of milk to ease her thoughts. Taking her blue hand phone with her, Mato walked down the stairs and entered the dark kitchen. She opened the light switch and was greeted with the sight of kitchen utensils. She strode forward to the refrigerator, her eyes groggily looking. But when she was about to open the fridge, something happened.

Black Rock Shooter's eyes widen as she realized that she was standing on a dilapidated railing, her hand reached out towards thin air. Staring at it for a few moments she withdrew back her hand and looked around her surrounding. She was back at the Other World, a world that looks barren and deserted. A place that can be describe as a post-apocalyptic world. The cold wind blew back and forth, bringing with it small speck of dusts.

What happen? She thought a moment. Why am I here again? Black Rock Shooter looked below her. Again her eyes widen in surprised. There was someone down there, she could see clearly who it was judging by the height, clothes and eyes. Dead Master? Without hesitation, she jumped off the railing, making a loud creaked sound.

Dead Master looked up from the sound and her eyes widen. But she did not move an inch as Black Rock Shooter landed safely not far from her. Both stared at each other, green clashes with blue once again but this time none of them wielded any weapon. Black Rock Shooter was still the same as last time with her string bikini top under her black jacket, white stripe running along the length of each of her sleeves and has a white star at the left side of her front and back. Below she wore tight-fitting shorts and knee-high booths and black gloves. While Dead Master was also the same with her black dress and bolero; her dress extends down her thighs and is accented with a white ribbon attached to her waist. Below she wears a pair of legging and black pumps. Her hands were dress in a pair of gauntlets.

But what is more confusing was the pair of horns on her head. Dead Master was supposed to disappear into oblivion, but here she was like nothing happen. Seeing the confusion written on Black Rock Shooter's face, Dead Master smirked. Unexpected she leap up and ran away. Black Rock Shooter was caught off guard but she chased after her. She did not know why she did it but her body told her to chase her.

A sudden chase turns into a tag but this time, instead of a cat chasing a mouse it was like the other way around. Dead Master's sinister smile did not look like an innocent mouse that was struggling to survive but she was like a cat playing with the mouse instead. Black Rock Shooter in the other hand, was not a cat or mouse. They ran pass bizarre landscapes and variety dilapidated buildings. Jumping from one place to another, they continued their meaningless chase until they arrive in one of the buildings which resemble an office building with nothing inside except the checkered tiles decorating the whole place.

Black Rock Shooter cornered Dead Master. But strangely Dead Master did not seem trouble of this instead, this was what she had expected. Despite Black Rock Shooter's hard stared, Dead Master remain unfazed, she only snickered. Then without second thoughts, Dead Master threw chains just like before. And just like before, Black Rock Shooter deflected it with her hand leaving blue flames behind in mere seconds. She ran towards Dead Master and caught her hands and pin her at the checkered wall. Black Rock Shooter's hands grip tightly at Dead Master's hand. Without realizing it, she was close, so close to Dead Master, who was still smirking in between Black Rock Shooter's hands. That smirked, it made her felt irritated. She did not want to see the smirk but instead she wished for a smile. Just like the 'other' her.

Dead Master's smirked grew when she saw the irritation, she lean forward and kiss the other girl on the lips. Black Rock Shooter's eyes widen, she did not know how to react to it as a result, she loosens her grip on the other girl. Dead Master snickered and took the opportunity to free herself by kicking Black Rock Shooter on the gut and sending her flying off and hit the other side of the cold checkered wall. Smokes clustered everywhere, Black Rock Shooter kneel down. She coughed a few times, her vision still blur from the unexpected attack. She did not realize that Dead Master was standing in front of her and when she knew it, it was too late. Dead Master kicked her hard once again and send her to the other wall followed by small explosion.

More smokes spread out and a huge crater appeared behind Black Rock Shooter, who was lying on the floor at her side. She slowly sat up, the pain was still there but she could bare it. Cold hands suddenly grab her face, forcing her to look at the green eyes of Dead Master. Though it was only for a short few seconds she sees it, the warm and affectionate smile, followed by the familiar cold lips pressing against hers. The tension between the two faded and was replaced with unknown feelings. This was something new to Black Rock Shooter that even her human counterpart did not understand. Dead Master though, seem to understand what her human counterpart wanted, so she only gave what she desired despite the fierce protest of her human self.

Giving up to this unknown feeling, Black Rock Shooter placed her arms around the other girl's waist, forcing Dead Master to lose her balance and fall under Black Rock Shooter's embrace. The kiss broke off but after short breathes they continued their passionate kiss. The painful feeling gone in an instance, and soon they both realized that they were disappearing. Back to their human self.

"Mato, wake up!"

Mato bolted up from her sleeping position, her rosy cheeks decorated with sweats. Her breathing hard as if she ran a marathon race. It took her few seconds to realize that she was in the living room of her house on the sofa. Her mother looked worried by her side. "Mom?" Mato said unsure. Her voice sounds deeper then her usual that her Mom was surprised. Mato in the other hand, realized that she sounded like Black Rock Shooter. She coughed a few times before making sure her voice was back to normal again. "Mom, what happen?" Mato's mother blink a few times before answering, "I found you sleeping at the kitchen dear. Are you alright? Are you hurt?"

"Hurt?" She examined her body and knew the pain when she became Black Rock Shooter was gone. "No, I am fine Mom. Maybe I am just…tired." She placed a hand on her forehead, it had been throbbing lately and it made her dizzy.

Her mother examined her for a while before she gave a sighed, "Mato I know there is something that you do not want to tell me but," her mother's eyes soften. "please do be careful and take care of yourself Mato. And whatever you decided to do with your life, I will always be there to support you." Mato felt touch at her mother's words. "Mom…"

Her mother then smiled slyly, "Of course I am not going to support you if you decided to do things that made me unpleasant dear."

Mato pouted, "Hey, I thought you said that you will support me whatever I decided to do with my life."

Her mom giggled and pat Mato on the head. "You rest here for a while Mato while I go prepare breakfast. Oh do you want to go to school today? If not I can call the school saying that you are sick." Mato thought for awhile, the idea of not going to school excites her but then she remembered something very important. Something that made her realizes that she needed to hurry. So she quickly stood up, "Sorry mom but I need to go. I promise Yomi that we will be going to the new shop down town today." Her mother chuckled, "Oh, your having a date and you have just told me about it." Mato blushed furiously at the mention of 'date'. "Mom! It's not like that at all." Her mother only laughed as she went into the kitchen leaving a blushing Mato behind.

"Geez. Why does she always say that?" Mato looked over a clock on the wall. "Oh no! I am late!" She ran back upstairs to her room, fishing out her towel and school uniform and dash out towards the bathroom. It took her around ten minutes to finish up everything. Taking a final look at the mirror, Mato grabbed her school bag and ran down to the kitchen where her mother greeted her like usual.

"Mato, sit down and eat your breakfast properly. Could you go wake Hiro up as well?" Her mother chided as Mato dive into the kitchen and grabbed a toast, which was still hot. "Ouch! Ouch! Hot!" Mato flay the piece of toast around for awhile until it cools down a bit. "No can do Mom, I am already late so I need to hurry." With that she exited the kitchen and was already by the door. The piece of toast was left hanging to her mouth while she struggle to put on her shoes. "Bye Mom!" she yelled for the last time and without waiting for her mother to say something back, Mato went out of the house.

She ran, she ran as if her life depends on it. Passing several houses and greeted few neighbors, she finally arrived. Not far from where she was, Yomi stood there staring up at the blue sky. Mato wanted to call out for her but she stopped herself. Something was wrong, her face suddenly felt hot for no reason. Yomi saw Mato at the corner of her eyes. When she turned to face her, Mato saw Yomi's face decorated with blush. They did not say anything to each other, the silent stares made them embarrassed. Mato tried to say something but nothing came out despite her mouth open. It was just then that the event at the Other World played in their mind. It was the kiss, Black Rock Shooter and Dead Master had kissed each other. Their other self, had performed an intimate act that only lovers would do. Mato gulped nervously, what should she do now?