The Final Boss Chapter 1, a katekyo hitman reborn! fanfic

The Final Boss

Inspirations: All of those video game AU fics in the Naruto fandom. And Half Prince (hence the genderbending).

Warnings: for gender dysphoria

Summary: /Tsuna's world is turned upside-down when his life becomes a video game. Or maybe that's just because 'he' isn't really a boy anymore?/ "Hieeeeee!? What do you mean the male character isn't unlocked yet?" VideoGame!fem!Tsuna

Disclaimer: Katekyo Hitman Reborn belongs to Akira Amano. 'Nuff said.

Beta'd by: the wonderful Winter's Light

Main Quest: Part Pre-Reborn

Chapter 1: The Beginning of the End

Even if she would never, ever, admit it, Sawada Tsunayoshi was aware that she had brought everything onto herself.

With that being said, if she ever got the chance to go back in time ―well, that time― Tsuna would have never let her younger (and decidedly male) self get addicted to video games.

(After all, Tsuna was No-Good Tsuna, and geez, she should have known that it would have been impossible for her to play video games like a normal kid.)

In fact, if our darling main character had known in advance what was going to happen to her because of her almost NEET-like nature, Tsuna might just be inspired enough to give herself a total make-over before basing her personality on Hibari's.

Really.

... In the very least, she would have burned every single video game in the world.

It all started in 20XX, when Tsuna had just turned thirteen.

Coincidentally ("I should have known that there was no coincidences with me," Tsuna moaned as her trusty Right Hand patted his drunk boss in sympathy― many years later...), 20XX marked the release of the hottest game of the year. Tsuna, lonely with too much time on his hands and too little unread manga, spent months preparing for this moment by squirrelling away most of his allowance into his piggy bank.

It would have been his first time playing a game like that. But even his classmates who thought that video games were nerdy gossiped about it endlessly. Tsuna had also finished numerous manga series, and with his summer vacation coming up, he needed something to keep himself entertained...

Thus, the game had been bought.

And played.

Well, needless to say, the game had been fantastic.

Tsuna fell in love. He began to use most of his money to buy more games. They used up time and he didn't feel as lonely; the characters in the games were interactive because of their AI programming and were even friendly! Tsuna became as addicted to video games as he had been with manga.

Even to this day, Tsuna curses herself for having too much time on her hands.

Six months after Tsuna discovered the lovely world of video games, the boy had already completed a staggering amount. He lived and breathed RPGs, to the point where he could recite all the stats of his most recent character without any hesitation.

Thus, Tsuna was not surprised when he went to sleep one day and opened his eyes to a menu screen.

Katekyo Hitman Reborn!

[START]

[HELP]

After all, with how much his world revolved around his favourite past-time, it wouldn't be shocking if the games even had an impact on his subconscious. Tsuna brightened, giddy with slight happiness once he realized he could even play video games in his dreams now.

He lightly tapped the start button when it became clear that the help button was not an option. Immediately, Tsuna's surroundings shifted before everything froze. Blinking in surprise, the boy let out a small shriek when a warning screen suddenly popped up in front of his face.

Warning: Male Character has not been unlocked. Proceed as a female? [Y/N]

Tsuna blinked again, before shrugging. He had played quite a few games with a female lead, to be completely honest, and they weren't bad at all. He didn't mind having a female character.

And after all, this was just a dream.

With his mind made up, Tsuna tried pressing the 'Y'. Nothing happened. Furrowing his eyebrows, Tsuna cleared his throat to try saying the command.

"Y-Yes."

Jackpot! His surroundings dissolved and the darkness quickly bled away.

And then Tsuna woke up.

"...chan! Tsu-chan! Wake up sleepyhead!" Sawada Nana's cheerful voice broke through the mist that surrounded Tsuna's head ―wait, when did his mother call him Tsu-chan? Opening his eyes reluctantly, Tsuna rubbed his gritty eyes before aiming a pout at his mother.

Geez, calling him Tsu-chan! Tsu-kun had been embarrassing enough at the age of thirteen. And not to mention, his mother woke him up when he had been having such a nice dream―

Tsuna froze and blinked.

He rubbed his eyes again before taking another look.

He pinched himself.

... Nope, the weird, glowing screen above his mother's head was still there. Tsuna could feel his sleepiness melt away immediately as his head filled with sudden clarity.

{Sawada Nana; LV 28}

His dream.

... Ohmygosh.

Tsuna paled when he remembered a certain part of that dream and rushed to the bathroom.

―nononononononononon―

But of course, trouble always followed Tsuna like a magnet.

His ―whoops, is it her now?― scream, high pitched and feminine, rang throughout their whole neighbourhood.

Tsuna spent a week huddled in his room before he mucked up enough courage to assess his situation.

(Luckily, his mother had thought that he was sick. And honestly, Tsuna spent days cooped up in his room playing video games so it wasn't really something different.)

Okay.

One; his normal life seemed to turn into a real video game.

Two; he was now a she.

To be honest, Tsuna didn't know what was more horrifying. Sure, his sex suddenly changed (and the funny thing was that apparently, his mother didn't see anything wrong with that), but Tsuna now had floating screens popping up everywhere.

Floating, glowing screens.

... What was wrong with him? Did Tsuna piss off some deity in his past life or something?

Taking in deep breaths, the preteen closed his eyes. He could do this. Tsuna played enough video games to know how they worked by now. Remembering how he had to say his commands out loud in his dream (which turned out to not be a dream in the first place), Tsuna took in a deep breath (and prayed that his sanity would hold).

Who knows? Maybe the floating words that followed his mother around was a fluke.

"Pause. Profile. Stats. Menu―"

... Never mind. It seemed like the fourth time was the charm. Tsuna watched in horrified silence as the colour began to bleach out of his surroundings, before an orange screen (What the heck?) popped up in front of him.

[Main Menu]

Status

Quests

Skills

Characters

Inventory

(CLOSE)

Tsuna pinched himself.

Nope. He wasn't dreaming this time.

"Uhhhhh..." Tsuna buried his head in his arms and made some dying animal sounds. Really, why was the universe always out to get him?

"Status," Tsuna said, after he spent a few minutes lamenting over his past life choices. The teen watched with wide eyes as the letters on the menu screen pixilated before re-arranging itself into new words.

[Status]

Name: Sawada Tsunayoshi

Class: No-Good

LV: 2 (1000 EXP to next level)

Affiliation: Namimori

HP: 150

FP: 150

STR: 1

VIT: 3

DEX: 2

INT: 1

LUK: 1

AGI: 3

Status: ? (?) ? (?)

Point: 0

Sawada Tsunayoshi is a student of Namimori Middle School. She is often bullied and is nicknamed 'No-Good Tsuna' because of her sheer clumsiness. However, Tsuna has a interesting future in store for her ...

(CLOSE)

"Ouch," Tsuna muttered as he eyed his Intelligence. His stats were quite pathetic. And his class! 'No-Good' was actually a class? What?

His Luck, Strength, and Intelligence were his lowest stats, at 1 (again, ouch). On the other hand, his Dexterity was at 2 (maybe it was from playing his video games?) while both his Agility and Vitality was at 3. Well, then again, he did have to run away from bullies and/or take beatings quite often.

Taking a closer note, Tsuna frowned. His status was completely covered in question marks, and ― and ― what the heck was FP? Was that suppose to be like MP? But if MP stood for mana points, then what did the 'F' stand for?

Shaking his head, Tsuna closed his Status and opened his Quests.

A new window popped up.

[Quests]

Current Quests

Quest History

(CLOSE)

Tsuna blinked. Since he just started this...game...it would be weird if he already completed quests. With that in mind, Tsuna chose the first option.

Cue more glowing screens.

[Current Quests]

Main Quest: Part Pre-Reborn

Enjoy your normal daily life while it lasts!

Pre-Reborn? What the heck did that mean? And normal? Tsuna fought against the urge to giggle hysterically. He has glowing screens popping out of everywhere. His body turned into a girl's. His life had turned into a RPG game.

If that counted as normal, well, then Tsuna really feared for his future.

With nothing more to look at, Tsuna opened up his skills this time. His quest screen was promptly replaced with a―

[Skills]

Empty

...

That was rather insulting. Understandable, since his life had just turned into a video game (and Tsuna admits that he did absolutely nothing in the week that followed that discovery), but still insulting.

Closing his Skills, or his lack-thereof, Tsuna opened up his Characters page. This one proved to be more fruitful.

[Characters]

{Sawada Nana}

LV: 28

REP―Friendly―600/1000

Sawada Nana is Tsuna's Mama. She is a good mother, if a bit air-headed at times.

Tsuna frowned. His mother's level was much higher than his, was that why there was so many question marks? And his reputation with her mother ... Why were they only on a friendly stage? Did his own mother think so little of him?

Sighing at his thoughts, Tsuna closed the screen to choose the last option on the Menu.

BAM!

A giant chest magically appeared out of thin air and almost slammed into his face.

"H-Hieeeee!" Tsuna shrieked and jumped back.

A mirror appeared on top of the chest, reflecting his body. Floating screens appeared in his reflection.

Plain Pyjama Shirt (-5% AGI, -5% LUK)

Plain Pyjama Pants (-5% AGI, -5% LUK)

Fuzzy Slippers (-10% AGI)

"..."

Okay, at least his pyjamas were comfortable.

Taking a cautious step forward, Tsuna reached out slowly and opened a drawer and took a peek inside. There was nothing in there. Tsuna hummed in surprise.

He had a lot of clothes in his closet. Perhaps he had to manually put them in the magical flying chest...er, Inventory, for it to stay there?

And also, how did you get rid of the inventory? There was no close button or anything...

"Oh no," Tsuna whimpered. It was time for round two of the guessing game.

"..."

Daily Quest Alert!

[Quest: What Colour Was Your Floor Again?]

Your room has become too messy! Clean it up in 20 minutes before you go to eat breakfast.

Completion Reward: +100 EXP, +10 REP with anyone who enters your room within the month

Completion Failure: -5 REP with anyone who enters your room within the month

[Y/N]

This was insulting. Why was this game so insulting? Tsuna only tripped three times since he got up this morning!

... Stop laughing.

After he lugged the chest around, tried throwing it out the window, and tried punching it to smithereens (-2 HP! "Ow!"), Tsuna figured out that the only way to get rid of it was to open another window.

(... That was terrible game mechanics. Could Tsuna file a complaint?)

During that time, Tsuna had stumbled over his various manga and loose pieces of homework. By the time he managed to get rid of his Inventory, the blue window with the, er, his first quest suddenly popped up.

Tsuna frowned. He was going to decline, but his mother would enter the room within the month for sure. Getting more reputation points with his mother would be nice ...

Tsuna rolled up his sleeves. "Yes, quest accepted."

Quest Accepted!

3 ...

2 ...

1 ...

The digits 20:00 appeared in the air. Tsuna blinked in surprise as it began to count down, before hurriedly began to clean up his room. Manga was put back onto the shelves, paper was piled up neatly on the desk. Dirty clothes were thrown into the laundry basket while the bed was properly made ...

By the time the countdown reached zero, Tsuna was pooped. Cleaning his room was not something he had been expecting when he got up this morning.

Quest Completed!

[Quest: What Colour Was Your Floor Again?]

You cleaned up your room in 18 minutes!

Completion Awarded: +100 EXP

Bonus Award: +100 EXP (+50 EXP per minute left on timer)

Tsuna shook his head as he gathered his clothes, ready to make a trip to the shower. Quests were weird.

Apparently, time froze whenever he opened his menu. Thanks to this, Tsuna came down to breakfast bright and early. His mother looked up in surprise.

"Oh Tsu-chan! You got up early today! Do you feel better?" Nana smiled brightly and Tsuna couldn't help but smile back.

"Yes Mama, sorry for worrying you." Tsuna picked at the hem of his clothing (Brightly Coloured Shirt (+1% VIT), Jeans (+2% VIT, -1% DEX, -3% AGI)) sheepishly.

Nana giggled.

"It's fine dear," the woman pushed over an omelet, "do you have anything planned today?"

It was just Tsuna's luck that it was the weekend. The teen had been planning to see what he could do with his new-found abilities of a video game character.

"Not really. I was planning to hang out outside," he said.

Nana's eyes widened as her smile got a bit brighter. "Tsu-chan ... is going outside? If that's the case, could Tsu-chan help me buy some groceries?"

Daily Quest Alert!

A blue window popped up. Tsuna jumped approximately a foot up in the air.

... Was this going to happen every time someone wanted him to do something? Oh no.

[Quest: Food Runs]

Buy lettuce, a package of cheese, three tomatoes, and some bread from the Marketplace! Bring it back to Nana by 12:00 so she could make lunch.

Completion Rewards: +200 EXP, +30 REP with Sawada Nana

Completion Failure: -100 REP with Sawada Nana

[Y/N]

"Tsu-chan?" Nana looked confused. Tsuna shook his head and looked away from the screen as he stuttered through a reply.

"O-Okay Mama! I can go and get some groceries."

Quest Accepted!

Nana beamed before she took out a list and some money.

"Thank you dear! Now, finish up breakfast and off you go. Some sunlight will be good for you."

Tsuna nodded, stuffing the rest of his omelet down his throat as he pocketed the money and list. He needed to work out the game mechanics before he had to go to school; it wouldn't be good if he freaked out there. People already called him No-Good Tsuna, he really didn't want people to call him Crazy Tsuna too.

Bidding a goodbye to his mother, Tsuna set out to the supermarket. He unconsciously relaxed as he walked.

It was truly a nice day with a lot of sunlight. Dew glittered on leaves and grass and the sky was a beautiful clear blue. Tsuna enjoyed himself as he smiled at the scenery; it had been a while since he had stopped and looked at the surroundings like this.

A skill has been created!

"Hieeeeee!"

Active skill, 'Observe' LV 1, has been created.

Tsuna closed the windows once he got his breathing under control. Damn, at this rate maybe he was really going to become 'Crazy Tsuna' by the end of the school year.

But still, did he just create his first skill? Feeling a bit giddy, the teen quickly opened up his skills window and―

Woot woot! It really was there!

[Skills]

Observe LV 1 (Active Skill); find target's information through observation; EXP: 00.00%

Tsuna blinked before he beamed. That sure sounded handy. Focusing on a dandelion flower, Tsuna whispered "Observe" under his breath.

A new window popped up.

Dandelion Flower

A weed that grows in the most surprising of places.

+10 HP

"Cool," Tsuna said in awe. Maybe this video game thing wouldn't be that bad after all.

... Other than turning Tsuna's body into a girl's, that is. Because really, glowing words could never be worth that horror.

(He still doesn't know how to go to the washroom properly. Help.)

Tsuna spent his time as he walked to the supermarket using his new ability. It was interesting to use it on people and see their levels. However, Tsuna soon realized that he couldn't see the stats of anyone with a level higher than 10. Perhaps it was because his own was too low?

Tsuna hummed softly as he picked handed his items to the cashier. Paying with Nana's money, he quickly made his way home so he could drop off the produce, lest it goes bad.

Nana took it from him with a big smile. "Thank you dear! And you're early, too."

Quest Completed!

[Quest: Food Runs]

You did Nana's shopping for her before noon!

Completion Awarded: +200 EXP, +30 REP with Sawada Nana

Bonus Award: +200 EXP (+100 EXP for every hour before noon), +20 REP with Sawada Nana (+10 REP for every hour before noon)

Tsuna smiled at his mother.

"You're welcome Mama," he said. He put his shoes back on as he opened the door. "See you later!"

Nana smiled. "Be back for lunch!"

"Okay!"

'Observe''s Level has risen by 1.

Tsuna jolted in surprise before breaking into a small smile. He had been using 'Observe' on the houses around him when the window popped up.

Closing the screen, Tsuna sighed and followed the path to a small park. It was usually empty of people, and Tsuna usually ran here to hide when the bullies got a bit more persistent.

The teen sat onto the swing and swung around lazily. The park was quiet and it was a great place to sort through his thoughts and think.

That might be why he had heard it first.

A soft noise rustled behind him, sounding slightly like rubbing a piece of paper into sand. Confused, because Tsuna was sure there had been no people there today, the teen looked up.

...

And stared.

...

"Hieeeeeee!" Tsuna vaulted himself off the swing seat, his wide eyes glued to the little ... creature thing that was sliding around in the sandbox.

It looked like a big (as big as Tsuna's head!) blob of red jelly.

With cute, beady eyes.

...

Yeah, you can't forget the eyes ... the eyes that were now on Tsuna because of his little shriek from before.

...

Tsuna prayed to any deity that the little slime (who knew the real world had slimes?) wouldn't think he was worth investigating.

But really, Tsuna should know by now that nothing ever goes his way. Because, oh my gosh, that thing was squelching (squelching!) over right now.

Tsuna took a millisecond to internally sob about the unfairness of the world, before he blindly pawed the ground around him and grabbed a sturdy tree branch. He backed away and started to abuse his new and only skill.

"Observe!" Tsuna whispered as he looked at the branch.

Tree Branch

A dry stick that fell from a nearby tree.

+2 STR

Urgh, curse his low Strength Stat! Even with the stick, he'll only have a Strength of 3! Swallowing dryly, Tsuna turned his sights back onto the red slime as he whispered another 'Observe'.

{Cherry Slime}

LV: 1

HP: 60

FP: 40

... Oh god, 60 HP? This was going to take a while, isn't it? The slime was still moving towards Tsuna too.

Maybe Tsuna could run away? But if he did that, how was he supposed to level up? And Tsuna wasn't really scared of the little slime thing. Slimes were the easiest monsters in a RPG. They dealt almost no damage and were supposed to be easy to kill. Plus, the red slime looked more cute than scary.

Hardening his resolve, Tsuna tightened his grip on his stick. Feeling awfully cheesy, the teen lurched himself forward with a battle cry and began to whack the red thing repeatedly.

Whack!

Slime -2 HP!

Smack!

Slime -2 HP!

Thunk!

Slime -1 HP!

Thwack!

Slime -3 HP!

Bash!

Slime -2 HP!

A new skill has been created!

Tsuna retreated slightly to catch his breath and to read the windows that had popped up again. Giving a quick glance at the writhing slime, Tsuna felt slightly disheartened to see that he had only taken 10 HP points from it.

Active skill, 'Continuous Strike', LV 1, has been created.

Tsuna frowned before shrugging. Well, if the new skill could help him deal more damage, he was all up for it. Taking a deep breath, the teen rushed toward the red slime again, this time shouting the name of his new skill.

"Continuous Strike!"

Tsuna felt his eyes widen as he felt his body move in an almost graceful manner, the stick stabbing repeatedly at the little slime.

Slime -3 HP! Slime -2 HP! Slime -3 HP! Slime -3 HP! Slime -2 HP! Slime -3 HP! Slime -3 HP!

Pivoting on his left foot (Tsuna, clumsy, clumsy Tsuna pivoting without hurting himself and/or falling? Is it raining dogs and cats?), Tsuna jumped up before bringing the stick down right on top of the slime.

Critical Hit! Slime -40 HP!

... Whoa. That was quite awesome. And hey, the slime shouldn't have any HP left, right?

Cherry Slime is defeated!

+150 EXP

Yup, it didn't. Tsuna felt his jaw drop as he watched the red slime melt away, before the red liquid became red smoke and obscured his view.

Coughing slightly and waving the smoke away, Tsuna squinted before his eyes began to make something out from the smoke. Creeping forward cautiously, Tsuna watched the smoke dissipate before―

...

Tsuna picked up something red and familiar looking.

Cherry Jello

Sweet jello! Yummy jello! We all love jello!

+50 HP

What.

Tsuna face-palmed.

Why him?

... Loading ...

Additional Special Event

Day 1:

Tsuna stared at his ―her?― reflection in fright. His eyes were larger and more doe-like, slightly hidden by his fluffy (when did his hair become fluffy?) bangs. His lips looked soft and plump.

And even with his baggy pyjamas, Tsuna could clearly see how more ... curvy his body was.

Tsuna screamed.

Day 2:

Oh god. Tsuna was sure he―she had a certain body part missing.

(Going to the washroom to do his business was both horrifying and messy.

Ew.

Help.)

Day 3:

There were two round ... things on Tsuna's chest. The (newly-turned) physically girl whimpered for more help.

Day 4:

He was beginning to smell.

Tsuna knew he needed a bath, but, how was he going to bathe with his body like this?!

Day 5:

He couldn't put up with the reeking odour of his own body anymore. Tsuna gathered some clothes and stepped into his bathroom.

He closed his eyes and began to strip.

His eyes remained closed as he started up his shower.

They were still closed as he fumbled for some shampoo.

And they stayed closed all the way until Tsuna was safely back in clothes once more.

(He slipped and tripped a whooping 9 times.)

Day 6:

Why do these things always happen to Tsuna?

Day 7:

Tsuna was an idiot. Okay, yeah, by now the boy/girl wasn't feeling as hysterical as he was before.

Kind of hard when you were given over 100 hours to think things through.

And anyway, it was kind of his own fault.

Now, all he has to do is to look for how-to videos for potty-training a girl ...

[Status]

Name: Sawada Tsunayoshi

Class: No-Good

LV: 2 (250 EXP to next level)

Affiliation: Namimori

HP: 150

FP: 150

STR: 1

VIT: 3

DEX: 2

INT: 1

LUK: 1

AGI: 3

Status: ? (?) ? (?)

Point: 0

[Skills]

Continuous Strike LV 1 (Active Skill); Strike at an opponent continuously. Only applicable when a weapon is equipped. EXP: 01.22%

Observe LV 2 (Active Skill); find target's information through observation; EXP: 02.32%

\Reputation Levels/

Sawada Nana: Friendly―650/1000

AN: I've always wanted to try writing a VideoGame!Main Character fic. I also wanted to write a fem!Tsuna fic. Unfortunately, I am too lazy to write two new fics. Hence, I put them together. Special mention goes to AthanatosOra who was the one that got me interested in KHR. I haven't really started reading KHR fanfics yet (on chapter 325 of the manga!) so I apologize if this idea isn't super original. And if anyone has recommendations for KHR fanfiction, please tell me! I'll bookmark them for when I finish the manga. In addition, requests and suggestions are totally welcome. I've played a few MMORPGs before but writing in the video game verse is actually much harder than I thought ...

And before I forget, thanks again to Winter's Light, who agreed to be my beta!

Notes:

'NEET': stands for Not in Education, Employment, and Training. Used in newer manga/shows to describe teens/young adults who do nothing but read manga and/or play video games all day.

The updated status and skills will be posted at the end of each chapter.