Thanks for the reviews. I really appreciated your reviews.

Please feel free to give some suggestions that I can use to make the story more interesting.

Please read and review.

The answer is yes. There'll be a story how and why about that in later chapters. I guess.

Sorry if you won't like the very short fighting scene in the story. I'm not good at writing it.

Disclaimer: I don't own KHR

Previously in Idai No Himitsu

"Don't say anything now, alright? I'm tired." He said to no one.

"Alright. If you say so Tsuna. Oyasumi." The low seductive voice again was heard in his room.

"Anyway, just let me sleep already." He shouted.

"Hai~ Hai~ Gomen."

The world's greatest hacker was then sent to a deep slumber.

xXx

Tsuna woke up early in the morning, wanting to arrive at the school early. He does not want to meet the famous hitman early in the morning.

He slid down of his bed slowly and he went in the bathroom.

After a few minutes he went downstairs. The brunet saw his mother preparing breakfast so he went to her side and greeted her.

"Ohayo, Kaa-san." He said. A lovely smile can be seen on his face.

She turned her head at her son and greeted him back. "Ohayo, Tsu-kun."

Tsunayoshi then helped his mother in cooking breakfast. Only a few knows that the boy was a good cook. Almost everyone saw him as a Dame-person because he was pretending to be one, though he always makes sure that his grades are always eighty percent right even though he can make it a hundred.

"Tsu-kun." He heard his mother call his name, so he stopped laying the food in the table and turned towards her.

"Hmm?"

"Are you ready?" He heard a tone of worry from his mother.

He just nodded his head and continued placing the food in the table.

Tsuna sat down in the table, said his thanks and started eating his food when he saw his mother enter the kitchen. Probably finishing the cake that she's baking for his brother and his brother's tutor.

After eating his food, his mother then popped out of the kitchen.

"Tsu-kun, you can leave the dishes behind. I'll take care of it. I knew you're busy. You can count on me too."

"Hai, Kaa-san... Ittekimasu."

"Itterasshai."

xXx

"Dame-Take, wake up already."

"Five more minutes..."

A green one ton hammer magically appeared from the hand of a certain baby hitman who has an evil smirk. The hitman then walked closer to the brown-haired boy and did his trick.

"Itte! Reborn what is that for!?" Takeyoshi yelled at Reborn.

The hitman just smirked and jumped at the door. "You'll be late if you don't hurry Dame-Take."

The teen's eye went wide when he saw the time. It was already seven forty-five.

"Ehh..! Why did you not wake me up earlier?!" He shouted while he sprinted here and there. And before you know it, he was already in his uniform.

'Ohh... I think that's a new record.' The hitman smirked.

Takeyoshi ran down the stairs and left the house immediately, not bothering to tell his goodbye to his mother.

Reborn's smirk fell when he saw that. He was disappointed at the other's gesture. Leaving his mother alone in the house without saying his goodbye was not something a good mafia boos would do.

He then walked down and sat the table to eat. He realized that his food now was tastier than he had eaten before.

'Where is Cielo?' He asked himself.

'I haven't seen him since yesterday.'

"Ahh... Reborn-kun, Tsu-kun told me to tell you not to come inside his room without his permission." Sawada Nana told the famous hitman while carrying a cake.

"I see... Mama, this food is tastier than before." He said, trying to change the subject and compliment the woman.

"Of course it is. Tsu-kun's dishes are always yummy. I'm a bit jealous of him about it..." He heard Nana said it with a tone of proudness.

"..." Reborn just stared at the woman, shocked for his own good. Who knew that the brunet was a good cook also.

"Tsu-kun always has many kind of cuisine that he can cook. Sometimes he teaches me how to cook some of it if I asked him."She informed the other.

"I see... Better ask him later to cook something for me then."

When Reborn saw woman then went in the kitchen again, he went to follow his student while smirking.

'Sawada Tsunayoshi huh? Just how many times would you manage to perk my interest.'

xXx

Tsunayoshi arrived at the school at exactly six in the morning, two hours before the class start.

The school was pretty quiet, as if he was the only one in there, though he was not really alone.

A certain prefect was doing his morning patrol in the area, looking for people to bite to death.

He saw the prefect walking in a steady pace near the school gate. He approached him and greeted him.

"Ohayo~ Hibari-san."

"Tsunayoshi." The raven haired teen said.

A pair of honey-colored eyes met with ash-blue-colored ones, telling something.

"I see..." The other said, understanding the message from the brunet.

The skylark went his way back inside the school with a professional hacker trailing behind him.

The whole walk was kind of silent. No one tried to break the peaceful atmosphere. Well who would? They knew that in a couple of weeks from now, it won't be as peaceful like now.

They arrived in front of a room with a label of 'Discipline Committee' hanging at it. The prefect opened the door and waited for the smaller teen to enter before he followed inside.

He gestured the hacker to seat at the sofa in the middle of the room and sat at the opposite side of it.

"What is it about this time?" Hibari broke the silence.

"Kyoya, they're on the move." Tsuna said.

"..." The skylark stared at the other wanting for him to elaborate.

Understanding the other's gesture, he continued explaining. "They are already in the move. Many of them are already gathering informations about me and the others. They also started to take some informations about you."

Hibari raised a brow, A bit amused. 'Interesting.' He thought. Someone had already taken informations about them and he hadn't even notice. This makes things thrilling.

"We need to do something about them..."

After a few minutes of talking Hibari sent the brunet out of the Discipline Committee room, telling him that 'the herbivores are starting to crowd.'

Knowing that it would be a problem that if someone saw him leaving the Discipline Committee room early in the morning, especially unscratched, he complied with the other.

"See you later... Hibari-san..."

"Hnn..."

xXx

"Did you hear?"

"Hear what?"

"Sawada Takeyoshi's confession to Sasagawa Kyoko?"

"Really?"

"Yup."

"When?"

"Earlier this morning."

"How? And what happened?"

"This morning Takeyoshi went and stopped Kyoko-chan in the school gates with only his boxer."

"What?!"

"Sawada Takeyoshi confessed to Sasagawa Kyoko this morning with only his boxer in front of the school gates."

"So what happened?"

"Kyoko-chan slapped him hard in the face, yelling that Takeyoshi was a pervert."

"Poor Kyoko-chan. Though I'll do more if someone tried to do that to me."

"Yup... That's right. If someone confessed to me out in public with only in his underwear, I'll call the police. I'll tell them that I'm being molested."

"I know... I wish Kyoko-chan's alright."

This was the conversation that Tsunayoshi heard over and over again the entire time that he was inside the classroom. His twin confessed to the School's Idol in his boxers only.

He smirked evilly, though only three people notice his expression.

Tsuna reached up his phone and typed a random number and texted it, the smirk still present in his face.

xXx

'Ring...Ring...'

'Now, who would text me this time?' A certain fedora wearing baby asked himself.

He reached for his phone and opened it. He hadn't known the number.

Being curious he opened the message.

'Way to go Reborn. I'm looking forward to your 'wonderful' and 'lovely' way of teaching.'

PS: I support your way of torturing... Opps... I mean tutoring my brother.

-The World's Greatest Hacker

A vein popped from his head, wondering how the brunet got his number. Only a few knew his number after all. So how?

As if the other was reading his mind, he received another message from the boy.

'I'm the world's greatest hitman. What do you expect? I can easily know your number if I got a few seconds to spare.'

PS: Don't think lightly of me, Uncle.

-The World's Greatest Hacker

Another vein popped in his head, though it was way bigger than the first one.

'I'll really make you pay, Cielo.' He thought evilly.

He received another message.

'I don't really need to pay, do I? I did not even ordered anything."

-The World's Greatest Hacker

'That's it! I'll make you order for something, alright.'

Another message.

'Don't worry. I'll pass at your offer.'

-The World's Greatest Hacker

Reborn was really at the edge. The brunet was really reading him like an open book. Even though the other can't see him, the hacker can guest what's in his mind easily.

'I know no one can read minds, especially if they can't see you. So how can that brat read me like an open book? He can't do that unless-'

His thoughts were cut by another message from The World's Greatest Hacker.

'Well that's already proven wrong, Reborn. I can easily read your mind without me seeing you. By the way, I don't appreciate you calling me a BRAT, alright?''

PS: Ohh... You're thinking right. I can read your mind perfectly because of that.'

-The World's Greatest Hacker

xXx

Tsuna was trying his best not to laugh and fall from his seat. He was quite enjoying his quality time with his Uncle, alright. If it can also be called as a quality time.

When He hid his phone in his pocket, he saw his brother went inside the room. His clothes have a visible sewing pattern on the back. He quickly snapped a picture of him in it, a hint of amusement in his eyes.

Then he heard his classmates...

"Way to go pervert!"

"Yeah. Way to go!"

"Confessing to Kyoko-chan."

"Are you out of your mind?!"

"Confessing in only in his boxers."

"Yeah... Right... In his boxers."

"COLORED PINK BOXERS WITH COLORFUL FLOWERS AND BUTTERFLIES AROUND IT!" A black-haired guy shouted.

"..." It became silent. They all stared at the black-haired guy who shouted that and to Takeyoshi who was blushing furiously.

To the guy...

To Takeyoshi...

To the guy...

To Takeyoshi...

To the guy...

To Takeyoshi...

To the guy...

To Takeyoshi...

"WHAT?!" The whole class shouted in unison.

"Yeah... Can't you see the video in there?" A random guy pointed at a small television that appeared out of nowhere.

They watched the video a few times...

Eyes widened, not believing the sight.

"It's really true!"

"He confessed to Kyoko-chan in his colored pink boxers with colorful flowers and butterflies around it publicly."

"He really is a pervert."

"Pervert!"

"Pervert!"

"Pervert!"

"Pervert!"

"Pervert!"

Tsuna was smirking in his seat, enjoying watching the wonderful and amusing scene before him.

'Looks like it's worth it when I recorded the whole thing and left it hanging in the board.' He thought to himself, clearly enjoying his success.

Three heads then turned to him, knowing that he was the one responsible about the incident in the room.

He felt the other three stare at him but he ignored them. He just want to enjoy the wonderful act that he was currently recoding. Again.

The scene continued for another five minutes. It was stopped by the best friend of the school's idol, Kurokawa Hana.

She had a scowl at her face, telling the occupants of the room that it was enough.

'Slam'

"Can you stop it already?!" She slammed her hands hard at her table, almost breaking it apart.

"Why? Takeyoshi deserved it!"

"I know that the Stupid monkey king deserved it, but Kyoko does not deserve it. Can't you see she's almost crying from what you have been doing?!" She pointed at her best friend

Everyone turned their heads to Kyoko who has a trace of tear dripping from her eye.

'Since when did she arrive?' They thought at the same time.

"..." The room fell silent.

Tsuna was really enjoying his time recording the scene. He had already anticipated the girl to snap and is waiting for her to snap.

"Can't you see that all of you are making Kyoko to remember that unpleasant event over and over again." It was supposed to be a question though it became a statement.

"..." Almost everyone present in the room had an expression of guilt.

"Don't you have any shame?!"

"..."

"What are you going to do to Kyoko?" She asked while looking at her best friend.

Everyone directed their attention to the orange-haired girl.

"Gomene Kyoko-chan..." They all said in unison.

Just when Hana was about to continue from scolding her classmates, their homeroom teacher, Nezu, arrived with a scowl on his face.

When everyone saw the man, they immediately sat on their seats, forgetting the argument that happened a while ago.

"Okay, class. We're going to have a transfer student today. He was an exchange student in Italy." He informed the whole class, an irritating feeling can be felt in his way of speaking.

After the homeroom teacher said that, a silver-haired, delinquent-looking boy entered the room with a scowl in his face.

"Gokudera Hayato. Italy." He lamely introduced himself.

Almost all the girls suddenly had a heart-shaped eye popped in their eyes, murmuring something about 'Hayato-sama's to cool, hot...' and Tsunayoshi swear he heard some of the girls whispered 'Wonder if he's compatible with Takeshi-sama... Better make a fan club then...'

"Get in my way and I'll blow you up." He said and continued his way to his seat, but when he was at the middle of it he saw the 'future Vongola Boss' not paying any attention to him, he headed his way to him.

He kicked the table of the poor Takeyoshi, leaving him in the floor, crying.

Tsuna and some of his classmates smirked at the action.

He saw the silver-haired teen left a note at his brother's pocket and proceeded to his seat.

xXx

Gokudera Hayato arrived at his seat after he kicked the Vongola Decimo Candidate's table.

He remembered the plan that Cielo gave him yesterday...

"Hayato, I knew I told you to arrive here three hours from now on." Tsuna entered at a dark room where he was supposed to meet him, he had his illusion to cover himself. Again.

"Cielo-sama. It's my job not to be late, especially if you're the one who wanted to meet with me." Hayato bowed his head at the direction of the figure that appeared out of nowhere.

"I see... Well, since you're here already. I think we should start the meeting."

"Hai~ Cielo-sama."

They sat at the large sofa that was at the middle of the room.

"Hayato, tomorrow I'll let you to have a simple interaction with the Vongola Decimo candidate in the morning and I'll let you challenge him like Reborn wants you to do."

"I understand."

"The challenge will occur at the back of the school, lunch time. Act like what Reborn wants you to do. I'll be watching you from a far, making sure that you'll be okay.

"You don't need to watch me Cielo-sama. I can take care of myself."

"No, you don't. Reborn would surely shoot him with a dying bullet and you'll be dead."

"But why would Reborn-san do that?" He asked.

"He wanted you to become a part of the Vongola Decimo's guardian, though he doesn't know that his student would surely kill you. He doesn't even knew what's his true color is. "

"..."

"I want you to act like you're losing to him."

"Why? Cielo-sama? Why do I need to act losing to him? I can easily overpower him."

"It's my plan. You'll purposely lit some dynamites and throw it at your feet. I can't save you if we don't have any diversions Hayato."

"..." He was stunned about the plan.

"If he won't save you, then I'll save you. If you're lucky, you can take a peek from his personality."

"I see. If you say so Cielo-sama. I trust you."

"Good."

"Umm... Cielo-sama... Why do you still have the illusion all over you, when we're alone?"

"Good question Hayato. I already let the others see my real identity."

"But why?"

"You'll know it tomorrow. After the mission."

"But-"

"I said tomorrow. You need to finish the mission first."

"I understand Cielo-sama."

After remembering the scene yesterday he thought.

'Why did Cielo-sama did not let me see his face?'

'Am I not worthy?'

'I understand that it might affect the plan, but still, why?'

'I know that Cielo-sama's doing the right thing to do.'

'But why? Why did he hide his face from me?'

'Does he not trust me enough?'

'Does he...-'

The silver-haired teen, name Gokudera was halted from his depressing monologue when a hand touched his shoulders.

He looked at the direction of the hand, only to see a grinning, black-haired teen with a care-free atmosphere surrounding it.

"What do you want?!" He scowled.

"Ne~ Gokudera~ Want to join me at lunch~?" The raven-haired teen beams him a happy smile.

"Who told you that you can casually call me like if you're my friend?! And no! I have things to do at lunch. Who would want to have their lunch with a baseball idiot like you?" He countered. He knew that the man was Yamamoto Takeshi, the baseball idol of the school because of his research about the students of the school.

"Me, and what do you need to do now?" Takeshi asked.

"What do you mean now?" He asked, still irritated.

"It's already lunch time."

"What?!" He screamed.

"Like I said, it's already lunchtime."

Gokudera immediately stood up and started running to the back of the school, leaving a grinning baseball player.

xXx

Time skip: Before the duel.

'I wish I'm still not late. I can't face Cielo-sama if I'm late. I can't let him down. I can't disappoint him.' These were the thoughts that run over and over again in the mind of the bomber while running towards the back of the school.

Gokudera sighed in relief when he realized that Sawada Takeyoshi just arrived at the meeting place.

He walked calmly at the other smirking and called at to him.

"I can't accept that you were to be the Vongola Decimo! Someone stupid like you should just go and die already."

Takeyoshi just turned his head to him and glare at him coldly. If looks could kill, Gokudera would be dead already.

Knowing that his precious Cielo-sama is watching him, he took the opportunity to act cool in front of the brunet.

"The Vongola would fall if it landed on you!"

"Shut up!" Takeyoshi yelled.

"Why should I? If I kill you now I'll become the Vongola Decimo, right Reborn-san?" He confidently asked at the baby that mysteriously appeared at the tree beside them.

"Yup... You'll become the Vongola Decimo if you kill him." Reborn confirmed.

The bomber reached his dynamites from his pockets and pulled them away. He lit a few and threw it at the now shocked teen.

The brunet barely dodges the incoming dynamites. He was yelling.

"WHERE THE HELL DID YOU GOT THOSE DYNAMITES?!" He yelled.

"That's Gokudera Hayato, also known as Smokin' Bomb Hayato. There's also a rumor that he can hide his dynamites in any part of his body." Reborn informed his student.

"Double Bomb!" The silver-haired teen threw more dynamites at the boy.

Takeyoshi was crying for help while dodging the dynamites that was being thrown to him.

'I'll kill you for sure.' He wished in his mind.

Reborn saw the determined face that his student made and shot him a Dying Will Bullet, he did not even tried to read the other's mind.

Takeyoshi fell to the ground from the sudden impact and stood up again. This time he's only in his colored pink boxers with colorful flowers and butterflies around it. Again.

"REBORN... I'M GONNA KILL GOKUDERA HAYATO WITH MY DYING WILL" He shouted. An orange colored flame appeared at his forehead.

Reborn's eyes widened when he heard that. He did not expect his student to want to kill the other.

Gokudera just continued throwing his precious bombs at the pervert before him who's closing their gap to kill him.

Then he remembered his mission...

"I want you to act like you're losing to him."

"Why? Cielo-sama? Why do I need to act losing to him? I can easily overpower him."

"It's my plan. You'll purposely lit some dynamites and throw it at your feet. I can't save you if we don't have any diversions Hayato."

"..." He was stunned about the plan.

"If he won't save you, then I'll save you. If you're lucky, you can take a peek from his personality."

"I see. If you say so Cielo-sama. I trust you."

He purposely lit many dynamites that he can handle and let them fall at the ground near him.

When Reborn would jump in to save the bomber, the bomber disappeared when one of the dynamites exploded.

He turned his head to the left, only to see Tsunayoshi giving his brother a cold stare. The hitman was kind of thankful that the stare was not directed at him, because even if the brunet was not looking at him, he was kind of trembling, though he won't admit it.

At the right side of the famous hacker he saw the bomber standing near him. He swear he could see some imaginary ears and a waggling tail at the silver-haired teen.

When Takeyoshi directed his attention towards them, Tsunayoshi was once again covered by his illusion.

Takeyoshi ran to them with an eye of someone who wants to have bloodshed.

And before he knew it Cielo disappeared from his sight and appeared in front of his younger brother and punched him very hard, making the other to be unconscious.

After making the other fall asleep he took his illusion off and walked back at the school campus with a bomber following behind him.

"Tsunayoshi!" The baby hitman called out to the hacker.

"Hmm?"

"Since when did you arrive here?" He asked.

"We arrive at the same time. I was at your side back then." He said smirking evilly.

"..." He was speechless. He did not even felt the presence of the teen up until he took the bomber before he died.

"Ohh... I see... You did not even felt me up until I saved Hayato." He was still smirking and a hint of amusement can be seen in his eyes.

"..." Bulls eye...

He heard Tsuna chuckled lightly.

"Ja mata ne..."

The two continued their way to the school campus.

On their way to their classroom, Tsuna told Gokudera to follow him to the Discipline Committee room.

Tsunayoshi knocked at the door when they arrive at the Discipline Committee room.

"Hibari-san, we need to talk."

"Hnn..."

The brunet took that as a 'come in' because of the other's attitude so he opened the door and told Gokudera to come in.

The two sat at the sofa that was at the middle of the room and saw the prefect sitting at the opposite side.

"Kusakabe, take it to their class now." Hibari said.

Hibari stared at the smaller teen demanding for the other to start already...

xXx

Time skip: Bedtime

"What the hell is their problem?" The hacker whined alone in his room.

"That brat is always like that. You should get used to it already." A new voice echoed in his room.

"Hnn..."

"You know? You're not helping at all!" He shouted and tried to glare, though his glare turned into a cute pout.

"Tsunayoshi, we don't even know if you're glaring or pouting."

"Hmm?" Tsuna raised a brow, not understanding what the other meant.

"Can't you see? They're dying from blood lost."

"Then let them die!"

He felt the other sweat dropped.

"They're the ones at fault for having inhuman thoughts about me!"

"Don't talk like that, Tsunayoshi"

"Yeah, right. Like if you're any different."

"..."

" I can see a little drip of blood dripping at your nose."

The atmosphere at the room turned cold.

"O-Oyasumi, Tsuna." The other stuttered.

"Oyasumi your face!" Tsuna mocked the other.

Again, Tsuna was sent to a deep sleep.

Little did they know an extra presence was standing near the door, listening.