Halo ^__^, Christmas is almost here hehe. I know, I know I was very late in updating again. Sorry Y__Y. I was inflicted by a very highly contagious and very dangerous disease. Yep the disease that could possibly kill anyone… Laziness. _ no, really laziness is a very serious disease. Laziness together with some distractions. Anyway, I hope you like this chapter.

Disclaimer: I don't own Bleach or its characters but I wish I do so I could place Shin in the real story.

~0~0~0~ texts ~0~0~0~ means flashbacks

~/~/~/~ means scene change.

Now unto the story.

"Why does Aisora-san call Aizen by his first name, Sosuke. Are they very familiar with each other? Why is his zanpakuto's cross-guard the same as Aizen's? And why does he have that string and pendant that I once saw when Aizen showed it to me? And I saw him once practicing his Zanjutsu kata, why is it the same as Aizen's? What is your relationship with Aizen, Aisora-san?" Momo asked Shin suspiciously.

Everyone looked at Shin and then they looked at his pendant and his sword. Some of them gasped when they saw his sword's cross-guard. All the while, Shin was looking at them amused of their reactions.

"Now that Momo have pointed it out, they really have the same sword cross-guard." Renji exclaimed.

"And he always calls Aizen by first name too." Rangiku said bewildered.

"Yare yare, and here I thought you don't like me that much Momo-san. I didn't expect you to be the stalker type who just watches someone from afar. You really did take every detail of me aren't you? Aren't you also going to ask me why I have the same brown hair and brown eyes?" He teased Momo.

"Answer my question!" Momo snapped.

"Hinamori-fuku-taichou, know your place. Addressing your taichou by his family name alone without his title was overlooked because your taichou requested that we do but snapping and shouting at your taichou like that and questioning him with personal things aren't easily overlooked." Yamamoto ordered.

"But he could also be helping Aizen. He could also be a traitor just like Ichimaru and Tousen. How many shinigami would even have the same cross-guard let alone those many similarities?" Momo exclaimed.

"Such disrespect is not allowed here no matter how laidback your taichou is when it comes to respecting him, Hinamori fuku-taichou. You shouldn't mix your own suspicion formed by your emotions. Your evidences for your suspicion is to shallow." Byakuya was stopped by Shin while everyone looked at Byakuya perplexed as to why he suddenly defended Shin.

"That's enough Byakuya. I think everyone had the right to know. And once Sosuke sees my face again, I'm pretty sure he would use it to his advantage. It's a lot better for them to know it from me than from him." Shin calmly said.

"But Shin…" Kirio tried to stop him.

"Daijoubu, Daijoubu. You just relax. This is an old ghost that should have been released a long time ago." He replied cheerfully as he looked at Yamamoto waiting for his approval.

"Very well, if this is what you deem the best then I shall approve." Yamamoto said.

"Okay, let me tell you a story of about more than hundred years ago. I suggest you relax because it's going to be a long one." Shin started.

"You see, more than a hundred years ago, there were five noble families. The Kuchiki, the Shihoin, the Masanori, the Shiba and the Koizumi."

~0~0~0~

"Aniki, aniki, lookie what oka-sama and otou-sama gave me." A young child said to his big brother as he showed him two prism shaped metal made of pure gold.

"Sugoi, these are very valuable. You should take good care of it ototou-kun." The older brother said.

"Aniki, what did they gave you? Last week was your birthday right?"

"Hai, this is what they gave me." He showed him a small prism like pendant with two dragons on each side meeting at the middle.

"Kirei, this is the family symbol right?"

"Hai, Both that was given to us our family symbols so we should take good care of it okay?"

"Hai, aniki."

"Makoto, Mamoru where are you? Let's go inside and eat. Oka-sama has prepared many delicious foods personally for the two of you." Their mother exclaimed.

"Let's go back Ototou-kun."

"Hai, aniki."

~/~/~/~

"Mamoru don't lower your guard. Don't let Makoto overpower you. You are older than him, you are bigger and you are physically stronger." Their father said as he taught his sons on zanjutsu.

A few more clashes and Mamoru was now panting while Makoto stop to let his big brother have a breather.

"Makoto, don't stop fighting until you have defeated your enemy. Continue to attack, on the battlefield trust no enemy, even the dead ones."

"But otou-sama, aniki is already breathing heavily. We must have a break for a moment." Makoto said.

"Don't worry about me Makoto, continue to attack. I won't improve if you go easy on me." Mamoru said.

"But aniki…" He was cut off as Mamoru attacked him. The spar continued until Makoto was able to force Mamoru to submit.

After the spar they rested under a big tree and waited for the matriarch of the family to call them for dinner. While they were resting, their father spoke.

"Mamoru, you need to get stronger. You shouldn't let Makoto overpower you."

"But otou-sama, Makoto is just too good. He was born with so much talent, unlike me." Mamoru said.

"Mamoru, no matter how talented Makoto is, it doesn't mean that he couldn't be beaten. You just need to formulate more plans. Talent could only win you much but wise thinking and planning could win it all for you. Makoto maybe talented but he is still make so many wrong decisions and have so many openings. If only you could analyze it then you should be able to win." Their father said.

"Hai, otou-sama." Mamoru said.

"Otou-sama, do I really have that many openings and wrong decisions?" Makoto asked.

"Of course, you do. Your hesitations and your reckless attack are full of openings. You should look at your flaws and try to improve them." Their father answered.

"Jeez, that means more training then?" Makoto said sadly.

"I guess so. But I'm very proud of the two of you. Both of you may not have achieved shikai yet but you could wield your zanpakutos using our family kata." Their father cheerfully said while putting a hand on each of his sons' head and hugged them close.

"I'm sure both of you will grow up to be someone this family would be proud of. So, you guys need to train hard, so one day both of you could surpass otou-san, okay?" Their father said.

"Hai." Both of them said.

~0~0~0~

"Matte, I don't get where this is going. You are talking about a family of nobles. But the only noble house standing today is of the Kuchiki and the Shihoin. What noble family are you talking about? And what does this have to do with you?" Renji said.

"Patience Renji-san, we are going there. And the noble family I am talking about is the Koizumi noble house." Shin answered.

"The Koizumi noble house? Wasn't that the noble family who were mysteriously massacred more than two hundred years ago? I believe it was said that they were massacred by some rebels from a district in Rukongai who had high spiritual pressure but it was said that those were false accusations and up until now, the killer hasn't been caught." Nanao said thoughtfully.

"My my, someone has been studying the history of the noble houses." Shin complimented.

"It's just that I am quite perplexed as to how the formerly five noble houses were reduced into only two. I was quite intrigued as to why the Koizumi was mysteriously massacred, the Masanori branded as traitors even though they are known as the number one supporters of the central 46 and later on also mysteriously killed and the Shiba suddenly fell out of nobility when there weren't any records of them doing anything against Seireitei." Nanao answered.

"Well, listen to my story and you might find the answers to your questions." Shin said.

"Chotto matte, how come you know the story of the family of the noble houses. Don't tell us, you're the one who mysteriously killed them." Rangiku exclaimed.

Shin raised an eyebrow and said.

"Err, more than two hundred years ago, I'll be younger than Yachiru. How do you expect me to do that?" Shin asked.

"Eh yeah, I guess you're right." Rangiku answered feeling dumb of what she just said.

"Well, to continue the story." Shin continued.

~0~0~0~

A visitor came into their house. She was lady on her late teens with long black hair.

"Ohayo, Mamoru-kun, Makoto-kun." The lady exclaimed cheerfully.

"Ah, Ohayo, Kukaku-san." Makoto answered.

"Kukaku-san, ohayo. What brings you here today?" Mamoru asked.

"Ah, are your parents here? I kinda need to talk to them." Kukaku answered.

"Ah, wait for a while. I will call for them." Makoto said as he took off to find his parents.

"Is there something wrong, Kukaku-san?" Mamoru asked.

"What makes you think that? I am just here for a friendly visit between the noble families." She answered.

"It's just that, you look a little worried." Mamoru finished.

"Ah, Kukaku you are here. I presume that you need to talk to us?" The Koizumi Patriarch asked.

"Hai, may we speak it in private?" she answered.

"Well, then let us go to the study room. Mamoru, Makoto, please continue with your training and after that, you may do what you want but please don't interrupt us or eavesdrop on us okay?" Their father said.

"Hai!" They said in unison.

After they finished their daily training, Mamoru and Makoto are at the living room patiently waiting for their parents.

"Jeez, aniki, what is taking them so long? I'm kinda bored. You think it's something very important?" Makoto asked.

"I guess so. Kukaku-san was kind of anxious when she came here. It might be something very important." Mamoru answered.

"WHY ARE YOU SAYING THINGS LIKE THAT?!" They heard Kukaku shout from inside the study room.

"Aniki, what's happening inside why is Kukaku-san shouting?" Makoto asked.

"I dunno, but we shouldn't eavesdrop."

"But Otou-sama and Oka-sama, I'm worried about what they are talking about. Gomen aniki, I don't wanna be left out of things." Makoto said as he slowly pressed his ears on the door.

"We shouldn't be doing this." Mamoru said as he also pressed his ear on the door and heard the conversation.

"Kukaku-san, please don't shout. My sons might hear you." Their mother said.

"Gomen, it's just that why would you just stand by and let that happen?" Kukaku asked.

"Because it is for the best and the right thing to do." Their father answered.

"But your sons, what about them? They don't have anything to do with this. Those shitheads are very violent and won't let anyone escape if we don't stop them." Kukaku asked.

"Mamoru and Makoto will be safe. We are going to make sure of that. To top it all, we aren't hundred percent sure if it will come to that but if it does, we know what the steps to do." Their mother said sadly.

"Tch, I'll never forgive those shitheads if they even try to do those things. By the name of our name Shiba, we will do our best to support you and if it comes to that we will fight with you." Kukaku said.

"That is very kind of you Kukaku-san, but please you don't have to bring your clan to our mess. You have little brothers who need you and your clan. Please stay out of this Kukaku-san; we don't want to drag you and your clan down." Their father said.

"Shinpai Shinaide, I'll be fine. I won't let anything happen to those two." Kukaku said finally.

The two Koizumi sibling hurriedly go back to the living room so they won't be caught eavesdropping.

"Aniki, who are those people that they are talking about? Are they really going to harm us?" Makoto asked.

"I think it's those so called rebels from a district in Rukongai. I'm not sure but that's my guess." Mamoru answered.

"But why would they want to hurt us? Oka-sama and Otou-sama helps people from Rukongai. We give them food and clothes. Why would they hate us?"

"I dunno otouto-kun, but all I know is those rebels hate noble families."

"Are they going to kill us, aniki?"

"I dunno but I'm sure the other noble house won't just stand idly. I'm sure they'll help us. You heard Kukaku-san right?"

"Hai, but Otou-sama turned her down."

"But we both know Kukaku-san, she will help us whether we like it or not." Mamoru finished.

~/~/~/~

They couldn't believe this. No, the Koizumi siblings are having a nightmare. Just moments ago, they were having fun with their parents and now they are running inside their house trying to hide from their pursuers. They suddenly stopped in front of a big door and opened it. It was the master's bedroom. Their Otou-sama closed the door. They saw their Oka-sama opening something on the floor. She then said.

"Mamoru, Makoto, hide in here."

"But oka-sama, what about you and otou-sama?" Mamoru asked.

"Don't worry about us, You two need to be safe." Their father said.

"But otou-sama, I don't wanna leave. I want to be with Oka-sama and Otou-sama." Makoto said crying.

"Gomen ne, Makoto-chan but Oka-sama and Otou-sama couldn't be with you anymore. But always remembers that we will always be with you. Here take this." Their mother said as she handed them the gifts they were given recently from their birthday.

"This'll always remind you of us." Their father said as he hugged them and their mother one final time until he pushed Makoto and Mamoru inside the hole.

"Sleep well, you two." He said.

Both siblings were plunged into place that looks like an aquarium. They realize that they were underneath their house and they are surrounded by reiatsu. Mamoru started to feel drowsy.

"Aniki, what's happening to you?" Makoto asked.

"I dunno otouto-kun, don't you feel it also? It's like the reiatsu around us is inducing us to sleep." Mamoru said as he drifted to sleep.

"Aniki, aniki don't sleep aniki." Makoto said.

Makoto looked up but he wished he didn't. He saw the killer standing on top of his mother and father's corpse. Both of them have multiple stabs on their body. He also saw Mamoru's and his body stabbed to death.

"That killer killed everyone, he killed us." Makoto said.

'Matte, killed us? But aniki and I am here. Then what are those? Puppets? Clones? What's happening here…' His thoughts were interrupted by a loud crash. He saw Kukaku standing in front of the master's bedroom door. Her face full of anguish and anger at what she saw. He saw Kukaku attacked the killer.

"Kukaku-san, please get away. He will kill you too. Kukaku-san!!!" Makoto shouted but Kukaku can't hear him but he could hear them. He closed his eyes not wanting to look anymore but a scream of pain from Kukaku forced him to pen his eyes.

He saw Kukaku limping trying to stand up, her right arm missing. He also saw the attacker standing up and limping because of a stab at the shoulder. The attacker escaped. Kukaku was about to pursue him when she saw the small opening at the corner of her eye. She studied it and saw that it was a hole. She gasped at what she saw.

"What the hell?" She said as she looked at the two siblings who were inside the hole. She looked back the corpse and counted them.

"Four, the whole family is killed. Then, how come?" She said.

She saw Makoto trying to get out of the hole. She trusts her sword on the kido surrounding the siblings. The kido was dispelled. Makoto immediately run towards his parent's corpse.

"Kukaku-san, naze? Why did they kill oka-sama and otou-sama?" Makoto asked while crying.

"Gomen, Makoto-chan but even I don't know why." Kukaku answered.

"We heard you. Aniki and I heard what you and our parents were talking about. Is this what you were saying?"

"Gomen, this isn't it. Even I was surprise at this sudden attack. That problem had nothing to do with this, atleast that's what I know. Gomen, I really don't know. We better get out of here now before another one comes."

"But oka-sama and otou-sama…"

"Makoto, let's go. Your parents sacrifice themselves so you and your aniki live. Are you going to let their sacrifice be in vain? Think straight, Makoto." Kukaku scolded.

Makoto could only nod. He holds unto Kukaku as they escaped.

~0~0~0~

"So, it's really the rebels who killed them huh?" Renji asked.

"Now, I know how Kukaku-san lost her right arm." Ichigo said.

"Nope, it wasn't the rebels who killed them." Shin answered.

"So, the mystery of their killer hasn't been solved, huh?" Kensei said.

"So, the Koizumi heirs are alive? Then, where are they? Are they with the Shiba? Is that why they fell out of power? Because they hid the Koizumi siblings?" Rangiku asked.

"Nope, Makoto and Mamoru are dead. And no, the Shiba didn't fell out of power because of that but it will be the start." Shin answered.

"Dead? Who killed them?" Shinji asked.

"Sosuke and I did about a hundred and eighty years ago." Shin answered.

"You what? Aizen and you killed the Koizumi siblings? Didn't you feel even a single bit of pity for them? They already lost their parents and their whole noble status. Yet, you had the conscience to kill them?" Ichigo outburst.

"It's the very same reason why we killed them. They already lost everything, what's there to continue to live." Shin said calmly.

"I thought you weren't heartless. But you are as heartless as Aizen. How could you do that? And much more do it with Aizen." Ichigo exclaimed.

"Yeah, maybe I am. I am the head assassin of the 2nd division, more than a hundred years ago. Of course I am heartless for my preys. If I am not, then many of my targets would have been alive by now." Shin smilingly answered which left Ichigo speechless not knowing what to say next.

"A hundred and eighty years ago, you should only be as young as Yachiru and I don't remember you or Aizen in the Gotei Jyusantai by those years. Aizen, was drafted in my division about a hundred and fifty years ago while you were drafted, ahh Yoruichi when did you draft him again?" Shinji asked.

"A hundred and sixty five years ago." Yoruichi replied.

"Well, do you mean to tell me that you and Aizen knew each other ever since before you entered the Gotei Jyusantai?" Shinji asked.

"Hai, we do, I thought that was already obvious." He said while looking at them quite surprised that they just figure it out now.

Everyone was speechless at what he said.

"Gomen, I didn't mean to insult anyone." Shin apologized feeling the little killer intent being released towards him.

~0~0~0~

"Kukaku-san, we will avenge our oka-sama and otou-sama." Makoto said.

"Avenge them? Do you even know who killed them?" Kukaku asked.

"No, not yet. But we will train hard using our family's scrolls and enter the Gotai Jyusantai. Then, we would be able to search for the killer once we are inside." Mamoru said.

"You two, do you know what trouble kind of trouble you are getting into? The Gotai Jyusantai isn't some establishment where you could manipulate so you could search for your parent's killers. Furthermore, I don't think they would help you. Tch, those shinigamis didn't even help when I asked for one when I felt that someone had attacked your home." Kukaku said bitterly.

"So, in the end they abandoned us huh? After all those years of our family being very loyal to them, they abandoned us. Makoto, change of plans." Mamoru said.

"Good, looks like you two now realize that what you were about to do was crazy." Kukaku said.

The next morning, Kukaku didn't find the siblings anymore. They left a note for her.

'Kukaku-san, arigatou for helping us and taking good care of us. We will leave your house because we don't want you to be dragged to what we may do. Furthermore, those killers might have found out about our fake corpse and might still be tracking us. We took all our family's scrolls. We will use them to get stronger. And then, one day we will have our revenge. Sayonara, Kukaku-san.

~Mamoru and Makoto~ '

From then on, no one saw them. That is until they did the most stupid thing. They tried attacking the Sou-taichou. The Sou-taichou was taking a walk around the forest near Seireitei when he was greeted by two charging zanpakutos.

"Ho ho, what energetic kids you are. Do you even know who you are attacking?" The Sou-taichou said.

"Hai, the head of the shinigamis who abandoned our family. We will have our revenge." Mamoru said.

"Revenge? For what? I don't remember abandoning any family. I don't remember having my own family either." Yamamoto said as he was dodging the attacks of the two.

"The Koizumi family, you abandoned us when we needed you most. You let our parents die. Iie, you let us die. You didn't even send any help." Makoto exclaimed.

"The Koizumi? Matte!" The Sou-taichou halted them but they didn't listen so he had to hit them several times till they can't move.

"You two are from the Koizumi family? Are you really Mamoru and Makoto?" Yamamoto asked.

"So? It doesn't matter now. Just kill us and leave us, it doesn't matter." Mamoru answered.

"So, Unohana-taichou's suspicions were correct that what we found were fake corpse. What happened that night, I don't know anything about. Someone might have blocked the message of help. But I will give you two a choice. I will dismiss this disrespect to me as nothing but child's idiocy and I'll admit you to the shinigami academy for you to have a chance to get stronger and someday might be able to find something more important than revenge or I could just kill you and leave your corpse here and dismiss you as nothing but just rabid animals." Yamamoto said.

Mamoru and Makoto weighed their options and talked it over until they came to a conclusion.

"Fine, we will come with you, but someday we will find those who killed our parents and we shall avenge them." Mamoru said.

"Very well, though believe me when I say that revenge will only result to more pain in your part." Yamamoto said as he and the siblings go to the first division barracks. Once they were there, Makoto said.

"Jii-san, is there a blacksmith here?"

"What do you need him for?" Yamamoto answered.

"We want to change our zanpakuto's cross-guards and we want to cut this pendant into two." Mamoru said as he showed him the two prism shaped golden plates and the prism shaped pendant with two dragons meeting on the middle.

"Very well, give them to me and I shall give it back to you by tomorrow. Now, you two sleep." Yamamoto said as he took their zanpakutos, pendant and the golden plates.

The next morning the saw their zanpakutos with identical cross-guards of prism shaped golden plates and tied to each handle is the two cuts of pendant now resembling a pentagon each and each pendant have a dragon in it. Both pendants have a silver string attached to it. They examined the work and smiled.

"So, did you like the modifications?" Yamamoto asked from the doorway.

"Hai, arigatou. Ne, jii-san could we ask another favor?" Makoto asked.

"That is?" Yamamoto asked.

"Could you kill us?" Makoto said.

"What do you mean?"

"The Koizumi clan is of no more. The last heirs are dead. They died with their parents. The one whom you found on the forest were not the heirs but just some souls in Rukongai who had strong reiatsus. From this day on, both of us would kill our original identity. This will keep us safe from our family's enemy and help us find that killer easier." Mamoru said.

"You two, really want that to happen? You would lose everything. All the inheritance, the nobility and the properties." Yamamoto said.

"Sou-taichou-san, we have already lost everything. We lost our family and that was the only thing that mattered to us." Makoto said.

"Very well, I shall spread that all the inheritance shall be kept inside the manor and no one is allowed to take it for all eternity as it was a treasure of lost nobility. I'll do this as a sign respect for your parents who served with full loyalty to Seireitei."

~0~0~0~

"Chotto matte, don't tell me you and Aizen are…" Hitsugaya said not wanting to believe.

"On that day. I confirmed the death of Mamoru Koizumi and Makoto Koizumi. On that very same day, Mamoru Koizumi took the name of Sosuke Aizen while Makoto Koizumi became Shin Aisora. Both relinquished their identities as the Koizumi siblings and became complete strangers." Yamamoto said.

"So, my suspicions are true. You and Aizen are relatives. You are Aizen's younger brother! Hajike Tobiume!" Momo snapped.

End of chapter 9

Translations:

Oka-sama – mother

Otou-sama – father

Aniki – big brother

Otouto-kun – little brother

Kirei – beautiful

Hajike – snap

A.N. So, that's the chapter. I hope you liked it. Well I personally think that I could have written it better. Oh yeah, stay tuned for next chapter. I think I could update next week but I would not be able to update two weeks after that. I'll be taking a Christmas and New Year vacation hehe somewhere…

Reviews:

Idontseepenguins – I hoped you liked Soifon as Sha-chan ^__^.

Ominous Blue – I haven't still decided if I should add romance. Maybe I should then end it with a tragedy ala Romeo and Juliet :P haha…

Oh yeah have you read the new chapter, Shinji's zanpakuto name is 'reverse petting' haha way to go Shinji ^__^.