Undertale KHR Style Chapter 10: True Lab, a Katekyo Hitman Reborn! + Undertale Crossover fanfic

I don't really like this chapter or most of the next, but nothing I do makes them better to me, so I've decided to just go ahead with them because people shouldn't have to keep waiting - if you are waiting.

I'm just really bad at any kind of fighting.

Apon entering the lab, Tsuna looks around but does not see Alphys.

The bathroom door is open and there's a note on the floor.

The Note is really hard to read because of the handwriting, but Tsuna tries his best to read it.

\Hey. Thanks for all your help back there. You guys... Your support really means a lot to me. But... As difficult as it is to say this... You guys alone can't magically make my problems go away. I want to be a better person. I don't want to be afraid anymore. And for that to happen, I have to be able to face my own mistakes. I'm going to start doing that now.

I want to be clear. This isn't anyone else's problem but mine. But if you don't ever hear from me again... If you want to know "the truth", enter the door to the north of this note. You all at least deserve to know what I did.\

So...Tsuna goes into the bathroom and is shocked to find that it isn't a bathroom at all! It's an elevator!

The door closes and the elevator starts to go down before it starts shaking and an alarm going off.

Tsuna falls to the floor, and put his hands over his head, he can't tell if he's trembling or if its just the elevator

"WARNING! WARNING! WARNING!"

The elevator than breaks completely and sends him screaming into the under-underground. when everything comes to a stop he slowly stops shaking, and then lefts his head to look around, please to find that he hadn't died. The lights are off, but the door is slightly open, giving some light. Tsuna, seeing no other option get up and goes forward to squeeze through the gap in the door. He was worried about Alphys, even if he had been annoyed that she had lied to him, he still thought of her as a friend, and didn't want anything to happen to her.

Walking down the rundown and dark hallway, he found some monitors on the wall, going up to them made them light up, Curious Tsuna starts reading.

[Entry 1: This is it. Time to do what the King has asked me to do. I will create the power to free us all. I will unleash the power of the SOUL.]

[Entry 2: The barrier is locked by SOUL power... Unfortunately, this power cannot be recreated artificially. SOUL power can only be derived from what was once living. So, to create more, we will have to use what we have now... The SOULs of monsters.]

[Entry 3: But extracting a SOUL from a living monster would require incredible power... Besides being impractical, doing so would instantly destroy the SOUL's host. And, unlike the persistent SOULs of humans... The SOULs of most monsters disappear immediately upon death. If only I could make a monster's SOUL last...]

[Entry 5: Using the blueprints, I've extracted it from the human SOULs. I believe this is what gives their SOULs the strength to persist after death. The will to keep living... The resolve to change fate. Let's call this power... "Determination."]

Walking around some more, not sure where to go, he found a note that said \ "elevator...lost power..." "...enter the center door..."\ Some words were missing but it seemed to say that Tsuna should go through the large door nearby, unfortunately, it seemed to be locked with four locks of different colors.

Next to the door was another monitor

[Entry 6: ASGORE asked everyone outside the city for monsters that had "fallen down". Their bodies came in today. They're still comatose... And soon, they'll all turn into dust. But what happens if I inject "determination" into them? If their SOULS persist after they perish, then... Freedom will be closer than we thought.]

Walking some more leads Tsuna to room with some kind of operating tables, they were sticky. There was also another monitor

[Entry 9: things aren't going well. none of the bodies have turned into dust, so I can't get the SOULs. I told the families that I would give them the dust back for the funerals. people are starting to ask me what's happening. what do I do?]

At the other end of the room is another door, and some sinks, two of the sinks did not turn on, but one did, and coming out of it was a white blob...that grew large and turned into one of the scariest monsters Tsuna had seen thus far. there were three of them and they appeared to be made of six faces in an oval, a bone, and a nondescript wisp. He could hear strange phone like noises coming from them, so grasping and holding up his phone he could hear them talk through it.

"Come join the fun."

"It's a real get together."

"Become one of us! "

Tsuna shook his head "I'm sorry, I cant join you."

"That's a shame."

"Become one of us!"

"Oh well."

They then went back up the drain, leaving Tsuna to sink down to his knees and shack for a moment, freaked out and scared.

After getting over his minor panic attack Tsuna took a deep breath and stood back up. Looking back at the sink revealed a red key, which Tsun quickly picked up and went through the door, it had a red lock, putting the key in and it lit up, turning Tsuna went to go look for another key somewhere else.

Another room had many beds and a dog bowl. Staring at one of the beds that had its cover pulled down, Tsuna felt the however long he had been awake pull on him, looking around and seeing, and more importantly, feeling nothing dangerous around, Tsuna got on the bed and quickly fell asleep

Waking up an unknown amount of time later Tsuna was shocked to see that he had been tucked into bed. Slightly unnerved but well rested Tsuna got up, stretched and started moving.

The next hallway is lined with pots of those ubiquitous golden flowers and mirrors mounted on the walls. It also has more monitors.

[Entry 12: nothing is happening. I don't know what to do. I'll just keep injecting everything with "determination". I want this to work.]

[Entry 13: one of the bodies opened its eyes.]

[Entry 14: Everyone that had fallen down... ...has woken up. They're all walking around and talking like nothing is wrong. I thought they were goners...?]

[Entry 7: We'll need a vessel to wield the monster SOULs when the time comes. After all, a monster cannot absorb the SOULs of other monsters. Just as a human cannot absorb a human SOUL... So then... What about something that's neither human nor monster?]

[Entry 10: experiments on the vessel are a failure. it doesn't seem to be any different from the control cases. whatever. they're a hassle to work with anyway. the seeds just stick to you, and won't let go...]

Tsuna keeps walking down the hallway of mirrors until another strange and terrifying monster appeared.

The nightmare monster appeared to be made of Whimsalot, Astigmatism and Final Froggit, it was horrifying.

"God your scary" Slips out before Tsuna can stop himself, praying that it hadn't heard Tsuna stares up at the Monster.

The monster summons some ... magic claylike monster, that then has its head eating by butterflies, leaving Tsuna to stare in terror, sure that he would forever have nightmares about this.

"Please...please stop." Tsuna does not notice in his terror the small flames licking up his hand and arms. The monster does.

"Someone finally gets it."

"Courage..."

"Ribbit ribbit."

It disappears, Tsuna shudders for a while, blinking tears out of his eyes, scared beyond all belief, but knowing he could not stop, he continued on.

One hallway has a thrashing tentacle creature behind a curtain. It moves faster and faster as Tsuna approaches, but knowing that he needed to find the key he kept going, but when he opened the curtain, nothing is there but the green key.

The next room has a large...skull? like machine taking up most of the room, trying to go around it leads to Tsuna meeting another of the strange horrifying monsters.

The monster smells like sweet lemons and looks like many other monsters Tsuna had met before, just like the last scary monster... Before Tsuna can think to do anything, The Lemon smelling monster ...speaks.

"Welcome to my special hell."

Tsuna stares at the monster, still unsure what to do, The Sweet Lemon thing trys to bite Tsuna, making him dance backward to avoid it. Staring at the body he thinks of Aaron, and decided to try something, and Flexes his arms, the monsters muscles shake.

It roars at Tsuna and tries to bite him again, making him run around to avoid it, as he does not want to be bit. It speaks once again.

"Do you think I'm pretty?"

Tsuna stares, and to calm himself down, hums Shyren's song. The monster shakes... and then seems to calm down.

It tells Tsuna that it Remembers and then goes away. Leaving Tsuna alone with the giant Skull thing.

Walking he finds two more monitors and a door, the monitors read;

[Entry 15: Seems like this research was a dead end... But at least we got a happy ending out of it...? I sent the SOULS and the vessel back to ASGORE. And I called all of the families and told them everyone's alive. I'll send everyone back tomorrow. :)]

[Entry 16: no No NO NO NO NO NO]

The room has a TV and some videotapes. Feeling his curiosity flare up again, Tsuna grabbed the tapes in order and put them in, they were all blanked screen, but Tsuna could clearly hear the audio.

Video 1: Psssst. Gorey, wake up.

Mmm? What is it, dear? ...err, and why do you have that video camera?

Shush! I want to get your reaction. Gorey, dearest. What is my favorite vegetable?

Hmmm... Carrots, right?

No no no! My FAVORITE vegetable is... eda-MOM-e. ...get it?

...go back to bed, dear.

No no! Not yet! Hee hee hee. Now, if I were a dog, what breed of dog would I be?

Hmmm... I don't know, honey. What kind of dog would you be?

I would be... A MOMERANIAN.

Hohohoho! You sure are excited to have this child. You know, if you keep making jokes like this... One day, you could be... ...a famous MOMedian.

...Well, I am going to bed.

Hey! Come on, Tori! That was funny!

Hahaha, I know. I am just teasing you. Goodnight, dear.

Goodnight, honey.

...Oh dear, perhaps it is too dark in here for the video to come out...

Video 2: Okay, Chara, are you ready? Do your creepy face! AHHHHH! Hee hee hee! Oh! Wait! I had the lens cap on... What!? You're not gonna do it again...?

Video 3: Howdy, Chara! Smile for the camera! Ha, this time I got YOU! I left the cap on... ON PURPOSE! Now you're smiling for noooo reason! Hee hee hee! What? Oh yeah, I remember. When we tried to make a butterscotch pie for Dad, right? The recipe asked for cups of butter... But we accidentally put in buttercups instead. Yeah! Those flowers got him really sick. I felt so bad. We made Mom really upset. I should have laughed it off like you did... Um, anyway, where are you going with this? Huh? Turn off the camera...? OK.

Video 4: I... I don't like this idea, Chara. Wh... what? N-no, I'm not... ...big kids don't cry. Yeah, you're right. No! I'd never doubt you, Chara... Never! Y... yeah! We'll be strong! We'll free everyone. I'll go get the flowers.

Video 5: Chara... Can you hear me? We want you to wake up... Chara! You have to stay determined! You can't give up... You are the future of humans and monsters...

Video 5 continues: ...Psst... Chara... Please... wake up... I don't like this plan anymore. I... I... ...no, I said... I said I'd never doubt you. Six, right? We just have to get six... And we'll do it together, right?

Tsuna looked down after the fifth video, the bad feeling he had had ever since entering the place just increased tenfold, and it made him feel a little sick, taking a deep breath he put the videos back and read the monitor in the room

[Entry 4: I've been researching humans to see if I can find any info about their SOULS. I ended up snooping around the castle... And found these weird tapes. I don't feel like ASGORE's watched them... I don't think he should.]

Sighing he left the room.

The next room he found himself in was filled with smoke, walking blindly forward the smoke lightened some and he could see some a switch, flipping it turned the fans on, and the smoke was sucked up, once all the smoke was gone, it was just Tsuna and a... Dog Blob monster.

...

And Tsuna just couldn't bring up the terror he normally felt when dealing with dogs, let alone Blob monster dogs twice Tsuna size...But honestly?

Watching that Clayman thing have its head consumed by butterflies was so much worse than this, then Anything Tsuna had ever seen before.

So Tsuna took another breath, and another, and did not hyperventilate, and instead thought about how the other dog were, and what he could do to make it go away... and the only thing all of the other dog monsters liked was...

Tsuna raised his hand, and slowly inched closer to the dog blob, and when he was close enough, but his hand down, lifted it back up and put it down again, petting the dog blob.

After petting it the thing convulses rapidly... then calms down. | It rests quietly on his lap for a moment... | Zzzzz... | Suddenly, it shoots away and crawls wildly on the walls! the dog blob started striking the wall with its claws.

Tsuna stared the fear still creeping along his back, even if it still wasn't as much as the butterfly head eating awfulness he had to watch, it was still very bad.

Not sure what else to do Tsuna takes his frying pan and throws it toward the monster, but misses, the Dog Blob looks at the pan for a moment before bringing it back to him... Proudly? Getting an idea Tsuna repeats the process a few times. And each time it brings back the pan eventually it got very tired... It leans its dripping, amorphous body on him...

Not sure what else to do, he pets it once more and It starts to generate a strange Froth, But it's not attacking so Tsuna keeps petting, eventually, it seems to fall asleep. Tsuna waits a moment before getting up, and he keeps breathing, as steadily as he can.

With the ventilation system on, the room is clear of smoke. So Tsuna looks around and sees more monitors, not really wanting to read anymore, but determined to find out all he can in hopes of a clue, read he does.

[Entry 11: now that Mettatons made it big, he never talks to me anymore. ...except to ask when I'm going to finish his body. but I'm afraid if I finish his body, he won't need me anymore... then we'll never be friends ever again. ...not to mention, every time I try to work on it, I just get really sweaty...]

[Entry 19: the families keep calling me to ask when everyone is coming home. what am I supposed to say? I don't even answer the phone anymore.]

[Entry 21: I spend all my time at the garbage dump now it's my element]

Walking by some fridges, Tsuna wishes he could say he was surprised when the one that was Shaking turned out to not be a monster, instead one other still one does...and the moster...looks an awful lot like Snowdrake...(who lost his mother)

She looked like a melting Snowdrake, mixed with some other monsters...and she looked...

So...

So ...

...Sad

It launched some small snow crystals at him, but they don't even come close. Tsuna stares at the monster with sad eyes, and thinks of Snowdrake, who told nothing but snow and ice-based puns, and decided to do the same

"I-Ice simply have no idea." Tsuna did not know many puns, let alone ice and snow based ones.

"haha...i...remem...ber"

"er...um...Ice to meet you?" Tsuna really wished he could think of better puns.

"haha...thank...you..." and then she seemed to melt away. leaving a blue key.

The only key left was the yellow key...where could it be?

So Tsuna went around trying to find the yellow key, using the green and blue keys when he found their locks.

Eventually, mostly thanks to the voice in his head, Tsuna found the Yellow key in one of the bed from where he slept earlier. Going to the yellow lock he found earlier, he then headed for the center door.

Going through the door led Tsuna to a machine that seemed to control the elevator's power, but before he could turn it one he felt his neck tingle and turned around quickly to find the monster from earlier all advancing on him, baking up the machine Tsuna had no idea what to do.

"Hey! Stop!"

Tsuna had never been more thankful in his life. Alphys was there, and the monsters seemed to listen to her.

"I got you guys some food, okay!?" The monsters leave the room, to go eat he guessed.

"Sorry about that... They get kind of sassy when they don't get fed on time. Anyway! The power went out, and I've been trying to turn it back on! But it seems like you were one step ahead of me. This was probably just a big inconvenience for you..."

"It was ...no problem, I was worried about you."

" I appreciate that you came here to back me up! As I said, I was afraid I might... not come back... But it's not because of these guys or anything! I was just worried I would be too afraid... To tell the truth... That I might run away, or do something...Cowardly"

"I understand...could you... I mean..." Tsuna trailed off. He still had Many questions, but he wasn't sure how to Ask any of them. he looked up when he heard Alphys sigh.

"Uh... I... I suppose I owe you an explanation. As you probably know, ASGORE asked me to study the nature of SOULs. During my research, I isolated a power I called "determination". I injected it into dying monsters so their SOULs would last after death. But the experiment failed. You see, unlike humans', monsters' bodies don't have enough physical matter to take those concentrations of "determination". Their bodies started to melt and lost what physicality they had. Pretty soon, all of the test subjects had melted together into... Those. Seeing them like this, I knew... I couldn't tell their families about it.

I couldn't tell anyone about it. No matter how much everyone was asking me. And I was too afraid to do any more work, knowing everything I'd done so far had been such a horrific failure."

She shook her head a looked away before sighing again and making herself face Tsuna.

"...but now. Now, I've changed my mind about all this. I'm going to tell everyone what I've done. ...It's going to be hard. Being honest... Believing in myself... I'm sure there will be times where I'll struggle. I'm sure there will be times where I screw up again. But knowing, deep down, that I have friends to fall back on...

I know it'll be a lot easier to stand on my own. Thank you."

The monsters came back into the room and Alphys looked at them.

"Come on, guys." And then they left, presumably to go tell the monsters families.

As he left he saw two more monitors.

[Entry 8: I've chosen a candidate. I haven't told ASGORE yet because I want to surprise him with it... In the center of his garden, there's something special. The first golden flower, that grew before all the others. The flower from the outside world. It appeared just before the queen left. I wonder... What happens when something without a SOUL gains the will to live?]

[Entry 18: the flower's gone.]

Tsuna goes into the elevator, it then closes on its own and starts freaking out, going up very fast. When it comes to a nerve breaking stop Tsuna Steps out into a monotone brick hallway, looking at the elevator finds it closed and guarded with vines.

Tsuna walks down the hallway and comes to a house that looks almost exactly like Toriel's house. Walking in he sees a chain with a lock and note. The note on the locks says to go find the keys and come meet the writer in the garden.

So he walks around the house to find the keys, which he does, and he sees a mirror and is shocked to find that he has changed.

Oh his hair is still brown and spiky and uncontrollable, and he's still short and pale...but his eyes are not brown anymore, no, now they are Orange...but Tsuna can't help but think that This is better...That this is more him than his reflection was before.

Keys in hand he goes back to the lock, then goes down the stairs, but this corridor is lined with monsters, warily Tsuna makes his way, but the monsters don't attack, they only tell him a story.

Froggit: A long time ago, a human fell into the RUINS.

Froggit2: Injured by its fall, the human called out for help.

Whimsun: ASRIEL, the king's son, heard the human's call.

Whimsun2: He brought the human back to the castle.

Moldsmal: Over time, ASRIEL and the human became like siblings.

Moldsmal2: The King and Queen treated the human child as their own.

Moldsmal3: The underground was full of hope.

Migosp: Then... One day...

Migosp2: The human became very ill.

Vegetoid: The sick human had only one request.

Vegetoid2: To see the flowers from their village.

Vegetoid3: But there was nothing we could do.

Loox: The next day.

Loox2: The next day.

Loox: ...

Loox2: The human died.

Snowdrake: ASRIEL, wracked with grief, absorbed the human's SOUL.

Snowdrake2: He transformed into a being with incredible power.

Ice Cap: With the human SOUL, ASRIEL crossed through the barrier.

Ice Cap2: He carried the human's body into the sunset.

Dummy: Back to the village of the humans.

Woshua: ASRIEL reached the center of the village.

Woshua2: There, he found a bed of golden flowers.

Woshua3: He carried the human onto it.

Shyren: Suddenly, screams rang out.

Shyren: The villagers saw ASRIEL holding the human's body.

Shyren: They thought that he had killed the child.

Dummy: The humans attacked him with everything they had.

Dummy2: He was struck with blow after blow.

Dummy3: ASRIEL had the power to destroy them all.

Knightknight: But...

Madjick: ASRIEL did not fight back.

Knightknight: Clutching the human...

Madjick: ASRIEL smiled, and walked away.

Final Froggit: Wounded, ASRIEL stumbled home.

Final Froggit2: He entered the castle and collapsed.

Final Froggit3: His dust spread across the garden.

Whimsalot: The kingdom fell into despair.

Whimsalot2: The king and queen had lost two children in one night.

Whimsalot3: The humans had once again taken everything from us.

Astigmatism: The king decided it was time to end our suffering.

Astigmatism2: Every human who falls down here must die.

Astigmatism3: With enough souls, we can shatter the barrier forever.

Loox: It's not long now.

Moldsmal: King ASGORE will let us go.

Loox: King ASGORE will give us hope.

Migosp: King ASGORE will save us all.

Pyrope: You should be smiling, too.

Vulkin: Aren't you excited?

Vulkin2: Aren't you happy?

Froggit: You're going to be free.

Tsuna walked into a golden hallway, he looked around in awe, and then kept marching forward.

He finds Asgore in a garden of yellow flowers.

"Dum, dee dum... Oh? Is someone there? Just a moment! I have almost finished watering these flowers. ...Here we are!" He Turns around.

"Howdy! How can I...oh." He is visibly taken aback when he sees Tsuna.

"I so badly want to say, 'would you like a cup of tea?' But... You know how it is. Nice day today, huh? Birds are singing, flowers are blooming... Perfect weather for a game of catch... You know what we must do. When you are ready, come to the next room."

Tsuna fallows Asgore into a grey hallway, with a light at the end.

"This is the barrier...This is what keeps us all trapped underground. ... If... If by chance you have any unfinished business... Please do what you must."

Tsuna shakes his head, he only needs to get home, he had not found a way to free the monsters, and there was no need to put off the inevitable.

Asgore brings up seven containers, Five with human souls.

"It was nice to meet you human." And then before Asgore could do anything, a ball of fire knocks him away, making Tsuan blink in bemusement, and then grin, because Toriel is here.

"What a miserable creature, torturing such a poor, innocent, youth..."

Tsuna could only laugh, overcome with relief to see Toriel again.

"Do not be afraid, my child. It is I, TORIEL, your friend, and guardian. At first, I thought I would let you make your journey alone... But I could not stop worrying about you. Your adventure must have been so treacherous. ...and ultimately, it would burden you with a horrible choice. To leave this place, you would have to take the life of another person. You would have to defeat ASGORE. However... I realized... I cannot allow that. It is not right to sacrifice someone simply to let someone leave here. Is that not what I have been trying to prevent this whole time?So, for now, let us suspend this battle. As terrible as ASGORE is, he deserves mercy, too."

Asgor looked near tears, "Tori... You came back...!"

Toriel however, did not, "Do not "Tori" me, Dreemurr! You pathetic whelp. If you really wanted to free our kind... You could have got through the barrier after you got ONE SOUL, taken six SOULs from the humans, then come back and freed everyone instead, you made everyone live in despair... Because you would rather wait here, meekly hoping another human never comes."

"... ...Tori... You're right... I am a miserable creature... ...but, do you think we can at least be friends again?"

"NO, Asgore."

And now The king of monsters was just flat out crying.

AND then UNDYNE Shows up!

"Nobody fight each other! Everyone's gonna make friends, or else I'll...! I'll... ..."

"Hello. I am TORIEL. Are you the human's friend? It is nice to meet you."

"Uh, yeah...? Nice to meet you!" Undyne goes up to stand next to Asgore, "Hey ASGORE, is that your ex? Jeez. That's rough, buddy."

Its only moments later that Alphys also busts through the doorway, she's looking down and starts talking without looking at anyone

"H-hey! Nobody hurt each other!... ..."

She is interrupted by Toriel, causing her to look up in shock, clearly having no idea who Torial even is.

"Oh! Are you another friend? I am TORIEL. Hello!"

"Uh, h-h-hi!" She then shuffles over to Undyne, whispering to her, presumably asking who Torial is.

"HEY! NOBODY FIGHT ANYONE!" Then Papyrus comes in, " IF ANYONE FIGHTS ANYONE...! THEN I'LL! BE FORCED! TO ASK UNDYNE FOR HELP!"

"Hello" Toral seems very happy to meet all these new people.

"OH! HELLO, YOUR MAJESTY!" Papyrus then comes to Tsuna, whispering loudly, "PSST! HEY, HUMAN... DID ASGORE SHAVE...? AND... CLONE HIMSELF?"

It's not long after that sans comes in, from the side that had no doorway! Saying. "hey guys...what's up?"

Torial seems to recognize sans and goes to stand next to him.

"That voice...! Hello. I think we may know each other?"

"oh hey... i recognize your voice, too. " sans also seems slightly shocked to hear Torial's voice.

"Toriel seems absolutely delighted to see sans, Asgore does not, "I am TORIEL. So nice to meet you"

"the name's sans. and, uh, same." sans winked.

"Oh! Wait, then...! This must be your brother, Papyrus! Greetings, Papyrus! It is so nice to finally meet you! Your brother has told me so much about you."

"WOWIE... I CAN'T BELIEVE ASGORE'S CLONE KNOWS WHO I AM! THIS IS THE BEST DAY OF MY LIFE!" We would need to explain this to him later.

Toriel gets a sly look on her face, "Hey, Papyrus... What does a skeleton tile his roof with?"

"HMMM... SNOW-PROOF ROOF TILES?"

"No, silly! A skeleton tiles his roof with... SHIN-gles!"

Papyrus now looked very frustrated, "I CHANGED MY MIND! THIS IS THE WORST DAY OF MY LIFE!"

Sans and Toriel share a satisfied look.

And whilst this was going on, Undyne and Alphys are trying comfort Asgore.

"Come on, ASGORE! It's gonna be OK! There are plenty of fish in the sea..."

"Y-yeah, ASGORE! Undyne's totally right about that fish thing! S-sometimes you've just got to, uh... S-stop going after furry boss monsters and, uh... J-just get to know a really cute fish...?"

Undyne stares at Alphys for a moment, prompting Alphys to continue with, " ...It's a metaphor."

Undyne then smiles, very pleased, "Well. I think it's a good analogy."

"OH MY GOD!" Mettaton walks by, but stops a moment pointing at Alphys and Undyne with his leg, "WILL YOU TWO JUST SMOOCH ALREADY!? THE AUDIENCE IS DYING FOR SOME ROMANTIC ACTION!"

Undyne then gets flustered and starts yelling at Mettaton, who is already walking away.

" HEY, SHUT UP! Man, the nerve of that guy! Right, Alphys!? ... Uh, Alphys?"

Alphys, however, is surprisingly calm, and now has a steely determent look in her eyes, "... No. He's right. LET'S DO IT. "

Undyne looks shocked and very pleased, "? Well? Uh? I guess? If you want to? Then? Don't hold anything back!"

They then start to, Very awkwardly lean into one another, but they are stopped from kissing by Toriel getting between them saying,

"Not in front of the Child!"

Everyone gathers around Tsuna, and then Toriel starts talking.

"My child, it seems as if you must stay here for a while. But looking at all the great friends you have made... I think... I think you will be happy here."

Tsuna did not reply, he could not stay here, that would mean leaving his mother to be alone, but he was unsure how to tell this to his friends, and he didn't want to kill anyone and take their souls so that he could leave, he really was at a loss for what to do.

It is at that moments that Alpyes decides to ask Papyrus a question.

"H-hey, that reminds me. Papyrus... YOU called everyone here, right? Well, besides, uh, her. Uh, anyway, if I got here before you, how did you know how to call everybody?"

"LET'S JUST SAY... A TINY FLOWER HELPED ME."

"A tiny... flower?"

And then large vines came and wrapped around everyone, the vines seemed to be draining them of there energy.

And then Flowey popped out of the ground.

"You IDIOTS. While you guys were having your little pow-wow... I took the human SOULs! And now, not only are THOSE under my power... But all of your FRIENDS' SOULS are gonna be mine, too! Hee hee hee. And you know what the best part is? It's all your fault. It's all because you MADE THEM love you. All the time you spent listening to them... Encouraging them... Caring for them... Without that, they wouldn't have come here. And now, with their souls and the humans' together... I will achieve my REAL FORM. "

"Please stop this, We don't need to fight, and no one needs to be hurt, please..."

Flowey just looks at Tsuna for a moment before continuing.

"Listen. If you DO defeat me, I'll give you your "happy ending". I'll bring your friends back. I'll destroy the barrier. Everyone will finally be satisfied."

...

"But that WON'T happen. You...! I'll keep you here no matter what! " And then the vines tightened around Tsuna's friends, And bullets surrounded Tsuna. Not seeing any way to go, Tsuna braced himself for pain.

Tsuna is hit over and over, and it hurts, but he's not going to back down, and the flames start building up again.

But then a ring of fireballs surrounds Tsuna, stopping the next wave of bullets. The fire is familiar, and Tsuna looks up at Toriel.

"Do not be afraid, my child... No matter what happens, we will always be there to protect you!"

Flowey tries to hit Tsuna again, but this time a bone and a spear come to protect him.

Papyrus, Undyne, and sans protected him.

"THAT'S RIGHT, HUMAN! YOU CAN WIN! JUST DO WHAT I WOULD DO... BELIEVE IN YOU!"

"Hey! Human! If you got past ME, you can do ANYTHING! So don't worry! We're with you all the way!"

"huh? you haven't beaten this guy yet? come on, this weirdo's got nothin' on you."

Flowey tries to hit Tsuna Again, and once again he is blocked, this time by more Fireballs and some lightning.

"Technically, it's impossible for you to beat him... B-but... Somehow, I know you can do it!"

"Human, for the future of humans and monsters...! You have to stay determined...!"

And then from the doorway come even more monsters. Snowdrake, Shyren, Vulkin, Monster Kid - in a not-yet-seen in-battle sprite - Muffet, G1, Froggit, and Greater Dog all crowd in to support Tsuna.

And for a moment Flowey seems genuinely upset, but this changes quickly, and Tsuna didn't really trust his upset expression in the first place.

"Urrrgh... NO! Unbelievable! This can't be happening! You... YOU...!"

And then he G.R.I.N.S

"I can't believe you're all so STUPID. ALL OF YOU SOULS ARE MINE!"

There is a bright Flash of Light, and when Tsuna's vision clears all the monsters are gone, leaving only one unknown monster that is around the same size as Tsuna.

He's white, with a striped longsleeved shirt, and he looks like...

But then who is he?

...

"... Asriel?"

He does not look at Tsuna, he flexes, " Finally. I was so tired of being a flower.", And turns experimentally, before turning to look at Tsuna.

"Howdy! It's me," He turns into a large adult Monsterus version of himself, "ASRIEL DREEMURR"