*rubbing my forehead* ...I have headaches. *grumble* But it did not stop me writing this chapter! *threw a fist in the air* I was too determined. And I need medicine or ice pack for my head... *whine*

Oh! Before I forget, I am using this story to AO3 for safe. Just in case. Ya know?

Pairings: R27 (Reborn/Tsuna), F27 (Fon/Tsuna), and C27 (Colonello/Tsuna)

RATED: M [Mature]

READ ME: Characters death; heavy violence; blood; gores; dark themes; monsters; disturbed details; yaoi, and languages [You have been Warned] *will add a new tag in this later story*

SOUNDS EFFECTS WILL BE ALL CAPS LOCK

[Music/Songs for the mood during story]

Warning: unbeta. English is my second language. ASL is my first. Yes, I'm Deaf. *peace*

I don't own Katekyo Hitman Reborn, and songs/music. None. And the inspires and ideas were thanks to zombies movies, games, and something. Thanks to them~

Enjoy~ *lazily doze off*

Location: Namimori Middle School

Date: October 3rd

Time: Afternoon of 12:36

Hibari walked down the hallway with Tsuna nervously followed behind. They are now starting their patrolling once they arrive at their destination. The petite boy glanced around the third floor quietly, until they reached the fourth floor. His caramel eyes scanned the surrounding, it was semi-clean, almost like the third floor. The fourth floor used to be a broadcasting room, teacher lounge, cleaning supplies room, cooking classroom, a few clubs' classes, and a library. There is dried blood here and there, a few litters, and broken windows covered with panels.

Then to the next level that reached the metal door that leads a rooftop. Hibari pushed the door opened wide, Tsuna followed outside through the door. His caramel eyes glanced around with surprise. The rooftop was clean, chain fences to prevent any accidents, and a few potted flowers that are dead in the corner of the rooftop. However, it's seemed clean and looked like the whole another world. A world that he is familiar with. A world that he is longing to be in again, to bring it back before the terrible outbreak.

Tsuna walked toward the chain fences, closed to the edge of the rooftop lips, his fingers link the chain fences as his eyes examined at the clear grey sky. It's like a whole new world to him, upon the clean rooftop, seeing the grey sky that reminded him of stormy clouds (even though he knew it's the ashes and smokes). When he's down there, where the dangerous creatures roaming on the land, the world became darker. Unaware that he was being observed by grey eyes.

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Hide and Run!

Arc I: Survival in School

Danger Four

"Bravery"

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Location: Namimori Middle School

Date: October 3rd

Time: Afternoon of 12:44

Third Floor

Two girls walked down on the third floor while scrutinized their surroundings. Haru glanced at the former popular girl. "What is Tsuna-kun like?" Haru asked with curious as she never met him before the Outbreak.

Kyoko hummed as she tilted her head. "Tsuna-kun is… he is shy and sweet. Not exactly have educational intelligent but, he is smart. A little bit loner as I've seen him eat lunch alone most of the time. And he tried his best. He's a really good person." She explained with a smile.

"I see… and the dame part?" Haru asked with confused. Kyoko blinked at her in surprise then glanced away with a little bit guilty.

"…Tsuna-kun is very shy. He doesn't really interact with us or anyone. Teachers tried their best to help him understand the lessons and his physical ability isn't the best…" the former popular girl felt terrible now that she thinks about it. She didn't approve anyone called Tsuna such an awful nickname, but she never really did anything. Which makes her feel horrible, however, now that Tsuna is here and surviving with them. She will try her best to become his friend. Kyoko glanced at Haru with a determined smile. "Tsuna-kun is shy but we will be there for him and help him gain confidence."

Haru blinked but smiles back. "Okay!"

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Time: Afternoon of 12:46

Second Level

"Do you have a problem with a little monkey?" Hana glanced at her surroundings as she walked beside Mochida.

Mochida scoffed as he tightens his fist around his kendo sword. "I don't understand how Dame-Tsuna survive on his own this long… it's suspicious."

Hana rolled her eyes with annoyed. "Seriously. Just because you've been bully Sawada since elementary doesn't give you the right to claim him suspiciously." She knew how Mochida is really like as she has been watching in the background.

"Excuse me?" Mochida paused his legs and glared at Hana who gladly glared back.

Hana crossed her arms. "I know who started with the nickname, who started with the teasing, who started with a bully, who started to steal his things and trashed it somewhere, who started with this whole ridiculous useless rumor about him." She waved her hand around at Mochida with an unimpressed face. "And who started it? A whole you, monkey."

"Don't act all innocent on me, Kurokawa. You did the same thing to him as well."

Hana narrowed her eyes. "How so?" she dared him.

The former Kendo captain smirked smugly. "You did nothing. Just stand back and watch. You didn't even try to save him. So, that makes you guilty and a bully, just like me." He mocked her then continued walking, leaving Hana behind who looked guilty and ashamed.

"Damn it." Hana muttered as her shoulder slumped.

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Time: Afternoon of 12:49

First Level

Hayato and Takeshi carefully scanned the hallway with cautioned since there's a possibility that zombies could see them from the outside as they are on the first floor. Hayato's sharp eyes scrutinized their surrounding with caution.

A silver-haired boy glanced at a tall former baseball player. "What's that asshole's problem with a brat? And the name? Dame?" he asked with confused and interested.

Takeshi's lip twitched as his eyes lowered. "Uhh…haha… well, I'm not sure about Mochida-san's problem. But… I do know, that he always has that name… Dame-Tsuna… since elementary."

"Why?" Hayato was baffled. He could see that Tsuna is a brat and scaredy-cat, however, from what he discovered about Tsuna's well-prepared pack for surviving, he's a smart brat.

Takeshi rubbed the back of his head with an awkward chuckle. "I guess because of the rumors."

"What rumors?" Hayato furrowed his eyebrows with puzzled.

The former baseball player star scanned the hallway while held tightly on his baseball bat that is hanging over his shoulder. "Like… fail every subject, trip over everything, lack of physical ability, and stuff that made him… useless."

Hayato snorted. "Sounds bullshit to me. I don't know what his intelligence when it comes to education in school subjects, I do know enough that he is smart to prepare for survival with supplies. And physical ability? I say he's not too bad when he runs away from those freaks. Not once did he try to slow us down. So, whoever came up with these shitty rumors… it's bully." Then he glanced around once again after another awkward silence.

"…you're right." Takeshi muttered softly.

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Time: Afternoon of 12:54

Courtyard

Ryohei made sure he is steady with his brass knuckles as he glanced around with caution. Shoichi fidgeted his glasses carefully while following close to the former boxer. It was a rather comfortable yet tense silence between them. No words exchanged since there is no need and plus, Shoichi knew that Ryohei is a naturally loud person and is really, tried his best to stay quiet down.

Shoichi rubbed his arms nervously as he attempted to ignore the blood and missing attire on the ground. From the corner of his eyes, he noticed something shining close to the wilted flowers. Shoichi narrowed his eyes as he attempted to identify but it was too far, even with his glasses. He went to the area, leaned down and picked up a silver key.

He rubbed the key and carefully observed it. There's no label nor any symbol what the key belongs to, however, it is something. 'Maybe Hibari-san or Kusakabe-san knows?' he pocketed the key, turned around, and quickly jogged to Ryohei who didn't pay attention except keeping his eyes out for any undead creatures.

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Time: Afternoon of 1:36

Apocalypse Survivors

"Any news?" Tetsuya glanced at the survivors who replied that it's another typical patrol and nothing has changed until Shoichi speaks up.

"I found this." He took out a silver key and Tetsuya leaned forward with slight interest.

Tetsuya grabbed the key not unkindly and carefully examined it. "Hmm… I don't think I recognize this key." He turned his head to Hibari who is sitting on his favorite spot in the corner of the room. "Kyo-san?" he held up a key.

Hibari narrowed his eyes at the key and shook his head. Tetsuya turned his attention back to Shoichi. "I don't think this key belongs to this school, however, it might belong to one of the drawers or possibly lockers." Tetsuya mused out loud the last part. "You don't mind if you hold on to it for a while?"

Shoichi shook his head, grabbed the key back gently and pocketed it.

"Now, let's discuss that we will have to run another errand. This time, for winter clothing." Tetsuya said. "Since we can't go today because the gate is blocked by the undead creatures. We will head out tomorrow morning, however, who will go? Any suggestions?"

"I'll go." Hana speaks up calmly as she crossed her arms. "None of you monkeys knew anything about female winter clothes."

Mochida furrowed his eyebrows at her. "Why should you go? You don't have a weapon." He pointed it out and Hana glared at him.

"I can defend myself just fine." The black-haired girl snapped at him with annoyed.

Tetsuya cleared his throat as he glanced at them with a warning. "That's fine. Kurokawa-san can join in a supply run group, who else?"

It took half an hour to discussed the run supply until Tetsuya glanced at his clipboard. "Alright, tomorrow morning to those who are going to supply run are Kurokawa-san, Kyo-san, Gokudera-san, and Sasagawa-san. The rest will have their patrol as usual. Okay?" he made sure that each survivor understood then he nodded. "Good. You rest may go on your business." He dismissed them.

Everyone left except Tsuna and Shoichi in the room. Shoichi pushed his glasses up and glanced at the petite boy with curious and nervous. "S-so… you were alone for three weeks, r-right?" Tsuna nodded his head with a soft frown. "C-can you tell me if there's anything unusual out there?" he asked, hope and interested.

"Like what?" Tsuna asked, confused. The unusual would be the undead roaming around outside.

Shoichi cleared his throat. "L-like… a soldier? Or even anything, a hint from government help?"

Tsuna hummed with understanding as he attempted to recall anything that could provide the information but, during his three weeks outside, there's no helpful information. "Iie, nothing like that." He could see orange-haired boy looked disappointed. "S-sorry."

"It's fine." Shoichi smiles weakly at Tsuna.

The petite boy bit his inner cheek while thinking quietly. His caramel-eyes glanced around the room curiously. 'I wonder how they survive in this school…' then he turned to Shoichi with interest. "U-umm, Irie-san."

The orange-haired boy turned his attention to Tsuna. "Hai, Sawada-san?"

"W-what happened here?" Tsuna asked, curious and confused.

Shoichi frowns uncomfortably as he adjusted his glasses. "W-well…I'm not sure I can tell you this. It's was…" he hesitated to explain further.

The brunette was really curious about why Shoichi couldn't explain but he doesn't want to make anything awkward between them. "It's fine if you can't tell me. I was just curious." Tsuna assured the orange-haired boy with a small smile.

Shoichi blinked with surprise but then his shoulders relax. "…if you really want to know, you should ask Kusakabe-san." He offered the suggestion.

After that, it was quiet but less tense.

BANG! CRACK!

Tsuna and Shoichi jumped to their feet as they heard the loud screams and noises break the silence. "W-what was that?!" Tsuna asked, panicked and worried as he ran out of the room.

"I don't know!" Shoichi followed with paled.

They heard the running footsteps down the hallway and saw almost everyone gathered with warily, confused, worried, and nervous.

"What's going on?" Hayato demanded with a frowned.

Before anyone could say something, Haru speaks up hesitantly. "Did you guys smell something…burning?"

They paused and sniffed in the air. They could smell the burning and quickly try to find the source from it. Hayato curse when his spotted smokes coming out of the supply room. "Shit!" all heads turned and saw the smoke coming from the rational room.

All bodies ran toward the room with panicked and Tetsuya slide the door opened wide and the girls gasped loudly while the boys swore when they saw fire spreading, devouring half of the classroom.

"We have to stop the fire!"

"How?! The waters are in there!"

"This is extreme not good!"

Tsuna stared at the fire with shocked then dart his caramel-eyes at others who are worried, panicked, fear, and sadness resigned. 'No… there has to be a way to stop this fire!' with determined, Tsuna dart inside the supply room.

"Oi!"

The petite boy ignored their warning shouted as he paled at the fierce blaze of flame, licking everything it touches. His caramel-eyes scanned the classroom quickly until it landed on the extinguisher in the corner of the room. Tsuna immediately darts to it, touches the glass inside the box and noticed there's a locked on it. 'I don't have a key!' he glanced around, saw a worn-out textbook on the floor that he went to it, picked up and back to the emergency box.

Tsuna smashed the glass with a textbook and flinched when he felt the small pieces of glass cut his hands. He ignored as he dropped the textbook, grabbed the extinguisher and pulled the safety pin. He turned around, fumbled with it and aimed at the angry fire and pressed it.

White gas released from the nozzle immediately doused the fire. He continued as he coughed a few times. Then he halted, dropped the extinguisher and covered his mouth in his inner elbow as water tears came. Tsuna felt a hand grabbed his arm, dragged him outside of the classroom to the hallway.

"Idiot!" Tsuna coughed once again then blinked away from the blurry. His caramel-eyes shifted up to a silver-haired punk who scowled at him. "What the hell were you thinking?!" he snapped, annoyed.

The brunette flinched. "I-I just…cough… I just want to help…" he answered, nervously.

Kyoko and Haru went to Tsuna with concern. "Are you alright, Tsuna-kun?" the former popular idol asked with worried.

Tsuna nodded his head with a weak smile. "Hai, I'm fine."

Hayato clicked his tongue sharply while Takeshi chuckled with concerned yet relief. Shoichi and Tetsuya looked relief while Mochida glared at the brunette boy with suspicion. Hana placed her hands on her hips with disbelieved but a hint of relief in her eyes. Ryohei grinned widely. "That was extreme, Sawada-san!" he threw his fist in the air, admired Tsuna's bravery.

Sharp footsteps heard as all heads turned and saw Hibari walking toward them with sharp glares. He halted, glanced at the supply room blankly.

Tetsuya cleared his throat. "The fire is extinguished, thanks to Sawada-san's quick thinking." He informed his boss/friend.

Hibari narrowed his eyes, carefully examined the half of the supply room covered in burnt. "Hn."

"I wonder… where did that fire come from?" Takeshi speaks up with confused. While Hana walked to one of the hallway windows and opened a few inches in the fresh air as attempted to get rid of the smokes. Haru and Kyoko did the same for the other windows and soon, the hallway is filled with a chill but comfortable.

"I don't know." Tetsuya frowned with contemplative. "I need to investigate to make sure what caused the fire to start. But if I have to guess, it could be because of the malfunction wire or power mess up…" he offers his thoughts of few things that could cause the fire to start.

Hayato crossed his arms. "Well, whatever it did. It destroyed half of the room which means a lot of supplies are gone." He scowled with irritation.

While they are talking, Tsuna walked to the opened window and leaned against the wall next to it. Enjoy the scent of fresh air while feeling tired from the adrenaline rush. Unaware that he was being glared by a certain bully.

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Time: Evening of 6:46

Tsuna is laying on the couch while staring at the ceiling, alone in the meeting room since Hibari hasn't returned yet. So, the petite boy is resting in a quiet room. It was rather peaceful and stress-free for him since he doesn't have to worried about the zombies attack him without a guard. And he couldn't believe that he, he actually destroyed the fire with an extinguisher. He, for the first time, felt useful instead of useless. It was a good feeling.

A small smile appeared on his face. He lifted his hands in front of his eyes and carefully examined the bandages wrapped his hands and fingers. Even though he got hurt, it was worth it because not only the fire was gone, half of the supplies are safe while another half is gone. Better than none, as others said.

He dropped his hands onto his chest while slowly closed his eyes and took a deep breath. He could feel himself slowly dozing off until a loud slammed door opened. Tsuna sat up with alarmed by the noise and saw Mochida walked inside with a scowled on his face.

"Oi, Dame-Tsuna." The former Kendo captain barged in. "I need to talk to you." He said with a nasty sneered.

Tsuna gulped dryly as he clenched his fingers on his shirt. "W-what is it?" he doesn't know why his bully need to talk to him, Mochida despises him.

Mochida crossed his arms. "For your information, I'm not here to chit chat with you." Tsuna bit his inner cheek while waiting. "Thanks to your 'heroic' act, half of our foods are gone. There is barely enough for everyone. And it won't last than a few more days." He sneered ugly at the petite boy.

Tsuna honestly didn't understand why Mochida is giving him a hard time and sounds like he is blaming Tsuna for not saving the rest of the foods. 'But I didn't see you do anything with the fire.' He mused, little defensive of himself.

"The best way we can get more food is that you will get it, Dame-Tsuna." He spat angrily.

The brunette boy frowned. "H-how?" seriously, how is he going to get foods? He isn't part of the supply run group.

The former Kendo captain smirked evilly. "From the cafeteria on the first floor, I'm sure you remembered where that is."

Tsuna stared at the bully with disbelieved. "W-what?"

"Right now." Mochida added, gleefully.

"B-but why now?" the brunette asked, confused as it's getting late and he recalled Tetsuya's words that everyone supposed to be resting in their rooms and prepare for the next day.

The former Kendo captain crossed his arms. "Because I'm hungry."

'Are you for real?' Tsuna stared at Mochida with deadpanned.

"Well? What are you waiting for, Dame-Tsuna?" he raised his eyebrows, mocking the petite boy. "You are brave, right? You did recuse us from the fire." He ridiculed with a fake smile. "This is nothing compare to fight the fire, you like to be useful, right? Dame-Tsuna?"

Tsuna frowned deeply while eyeing at the bully then sighed. He doesn't want to deal with Mochida's taunt any longer, so he nodded with reluctant resigned.

"Good." Mochida said with an ugly smile.

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Time: Evening of 7:22

First Level

Tsuna eyeing his surroundings with careful caution as he noted the first floor is very hauntingly scary at this late time of evening. He shivered when he felt the chilling air from the crack on walls and windows. Tsuna noted the windows are carelessly nailed with wood panels and the desk and chairs are pushed against the walls and other some doors that lead to classrooms.

The petite brunette hugged himself, attempted to warm his body against the cold breeze. His caramel-eyes glanced around. 'The cafeteria shouldn't be too far now…' he mentally sighed, he can't believe he is doing this and even allow Mochida to continue to bully him.

Tsuna never thought he would still be bullies after the zombie apocalypse. He shook his head and continued walking quietly.

GRRRRR…

The petite boy nearly squealed in shock that he slammed his mouth with his hand. His eyes widen in fear when he saw an undead creature limping outside, unaware which was lucky for him. Tsuna slowly, slowly walk to the wall while keeping his eyes on the deadly creature.

When he felt his back touch the wall, he quietly lowered down so that his chance goes unnoticed would be better. He continues watching the zombie limping away which it was agonizingly slow. From the corner of his eyes, he could see doors from few feet away that lead to the cafeteria. '…if I go there, that zombie will notice me…' he frowned.

Should he do it? But why risk himself just because Mochida is hungry? Tsuna shook his head. 'No… I can't risk this… I can't let that creature notice I'm here. It would bring dangers to others.' He refuses to let others be in danger because of his possible recklessly risk action and just because Mochida wants food.

Guess that means Tsuna will have to put up with Mochida's bully which was not the first time. Better than bring dangers to others. Just as he was about to sneak back to the staircase, a familiar voice speaks up.

"Tsuna?" the petite boy jerked in surprise as his eyes glanced up.

Takeshi stared down at him with confused while carrying a baseball bat over his shoulder. "What are you doing here? It's not safe to wander here at this time." He said, with a frown. Takeshi used his free hand open to Tsuna.

The brunette boy blinked at the palm, accepted it and Takeshi helped Tsuna up to his feet. His sharp brown eyes observed the quiet hallway then tugged Tsuna to the staircase.

Once they are near the staircase, they start ascending up and Takeshi tilted at the small brunette. "So, why were you wondering on the first floor?" he asked, with a confused smile as his eyes filled with suspicion.

"Ah… I was trying to get the food from the cafeteria." Tsuna half-lied, he doesn't want others to know that Mochida practically forced him to get food, plus he doesn't want to trouble anyone since this is between him and the bully.

Takeshi hummed softly. "You must be really hungry." He chuckled quietly. "Didn't you have food from your backpack?"

'Of course…' Tsuna felt like an idiot, he could give one of those snacks from his backpack to Mochida. It was easy and less problem. "Ah…" he scratched his cheek with sheepishly smile. "…I kind of forgot about that." The baseball player chuckled once again.

Silence appeared on both of them as they continued walking upstairs to the second floor. "Tsuna…" the petite boy hummed. "…I want to say, I'm sorry."

"Heeiii?" Tsuna blinked at the baseball player with surprise. "W-why are you apologizing for?" he asked with confused.

Takeshi half-grinned with guilty and nervousness. "I was wrong… you are not dame at all." His dark brown eyes sparks with admiring and amazed. "…you are so brave. To survive on your own for three weeks and pulled out the fire… you are so cool." He chuckled half-hearting.

Tsuna felt embarrassed blushes appeared on his cheeks. "I-I'm n-not cool." He stuttered, feeling flustered. "I-if anything, you're the cool one, Yamamoto-san." He said, softly.

"Eh?" the baseball player looked at Tsuna with surprise.

The brunette smiles softly. "Unlike you, I've never put effort into one single thing… in fact, I'm a pathetic person who would have regrets. Thinking that I could die anywhere, anytime because of the outbreak… I didn't want to waste myself. S-so, I will try my best to make an effort to survive no matter what." Somehow, his caramel-eyes brighten to burnt orange. "I will do it with my dying will." He whispered, dramatically.

Takeshi stared at the petite boy then smiles. "I see…"

When they arrived at the third floor, to the meeting room and paused in front of the door. "You're wrong Tsuna…" Tsuna frowned with confused at Takeshi who grinned at him. "…you are definitely cool." He opened his palm at him. "And I hope we can be friends."

Tsuna gap at him with stunned. 'F-friend?' never would he thought he gain a friend. His caramel-eyes stared at the offering hand then a smile appeared. He accepted Takeshi's friendship request, much to their happiness. "Good-night, Tsuna."

"Good-night, Yamamoto-san." Tsuna bid his farewell, opened the door and walked inside. He glanced at Hibari who is sleeping on the couch. 'Ah… I better be quiet, so I don't accidentally wake him up.' He shut the door behind very quietly and walk to the other couch, laying down and slowly close his eyes. 'Friend…' a pure, bright smile on his face. He finally has a friend.

Tsuna couldn't wait to tell his mama when he'll find her.