Undertale - Power Surge Ch.4

A/N: I apologize in advance for the lack of puns for Sans. I'm not that great of making them so... bear with me on this. Also apologizes if any of the main cast acts OOC.

And no, its not a Sans/Reader thing. He's just protective of the Reader for being a friend. These guys are always overprotective about the people they care about and new friends they get, so yeah. I find it cute.

Note: BATTLE SCENE! Um, Battle scenes are not my forte so I apologize in advance if its too short or not very good. I am trying. I blame my brother for any Fairytail like fights in this story.

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~ Chapter Four: Undyne vs Doom Knight Papyrus
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Frisk's eyes widen at those four words, shocked by the request. But they searched his gaze, trying to see what it is that would compel him to ask them for their soul. Aside from the fact, Papyrus is currently on a rampage, it wasn't long that they understood why.

Sans was desperate.

But before they could voice anything, such as ask what was the plan, Toriel beat them to it first. She shot up from her position, her protective streak kicking in once more to protect her child. Neither Frisk and Sans blamed her for it. This is a pretty risky move. “Sans! How could you ask for such a thing?!” the goat woman cried out in fear, “I know you mean well but this? This far too dangerous! Please don't as-” But before she could say anything else, a blue aura surrounded her and she suddenly felt heavy... too heavy to stay on her feet.

“Toriel.” Sans' voice came out like growl as she slowly sank back down on her knees. He relieved the pressure but kept the magic still on her. He didn't enjoy doing it to her, nor enjoyed the shocked and even frightened look on everyone's faces because of the action. “I know you mean well, you love Frisk with all your heart just as much as the rest of us. So forgive me for saying this but I don't have the time to deal with your overprotective bullshit right now.”

She winced at his tone and he grimaced in response. “But...”

“No, listen.” He hissed, flicking his gaze to her. “Look at who's in front of you soulless!” Her eyes fell upon your body quietly. “Papyrus ripped their soul out and they're dying because of it!” He gestured angrily toward the general direction of where his rampaging brother was along with their friends. “Undyne and their soul are OUT THERE, battling him right now and he's not going to spare them! He will kill Undyne, take the human soul and come here to finish them off. And probably kill the lot of you as well! I'm trying to stop him.”

The group looked at each other then, out beyond the trees and then back to Sans silently. Frisk fidgeted, looking at everyone else and quietly started to weigh their options. It wasn't because they were scared (and they were) but had to think about if this plan of his whatever it was would be the best option.

Sans continued, shaking slightly under his jacket. “I'm scared of what my plan would do. I really am. I'm worried it won't work and that things will happen that I can't fix. But that's why I'm asking Frisk for their help.” He lowered his hand and the blue gravity magic surrounding Toriel dispelled at his mental command. The skeleton looking at his long time pun buddy with sadness. “If they refuse then I'll respect that and find some other way to do this...” He smiled at Toriel. “Its Frisk's decision. Shouldn't you have more faith in them for that?”

A sheen of tears formed in Toriel's eyes in realizing he was right. She jolted a bit in surprise at the sudden hug she received, smiling as she hugged her child in return. “I'm sorry, he's right, my child. He is asking you for help. But whatever you decide, I'll support it.”

“Thank you, Mom.” Frisk whispered, firmly holding onto their decision.

“So, what do you say, kiddo? Think you're up for this?”

Frisk stood back from Toriel and grinned at Sans. Well, they did want to help and now was their chance to do it. They saw no real reason to refuse.

“Aside from needing my soul for this... what's the plan?”

“Well, let's just say we're gonna test my theory. And this theory will be our plan.” Sans began, hands in his pockets, “You see we're gonna be doing...”

~~~~~~

~Battlefield

Undyne fixed her helmet into place and took up her spear just as the shield flickered and shattered. The little heart jumped at the sight of it, making a little dash toward setting it up again but stopped when the fish warrior held up her fist. “Don't. The shield will keep him stalled for a little longer, but he'll get bored and leave.” she whispered to you. “We have to keep him here away from everyone else until Sans gets back.”

You protested with a little titter of bells.

“Don't do that, you sound like a little fairy. Heh. Fairy partner.” the warrior mumbled and snerked to herself as he eyed Papyrus shift into a ready stance. “For that matter, you stay here. We don't need him snatching you up to be a pet or something.”

You tittered again.

“You realize I can't really understand you, right? Look, just stay here and keep an eye out for Sans.”

With that said Undyne charged forward, screaming her battle cry and lunged for the taller skeleton. The knight shifted to a defensive stance, swords drawn up to block. He was startled as Undyne stabbed the earth before her and used her spear to pole vault the remaining distance. She smashed her feet against the flats of the blades, the force of her momentum jarring his arms with pain and weakening his defense. Before she lost her rhythm, however, she launched herself skyward, another spear spinning her hands.

Papyrus stumbled back, shocked that she had just used him as a launch pad. He honestly didn't see that coming but it was effective, he'd give her that. His bones were still rattled from the force of the blow and his arms were in pain from it. He grinned to himself, she weakened his defense a little. He looked up and watched as she spun her weapon and let gravity do the rest of the work for her. Undyne dropped out of the sky, her spear clutched close to her body but the spearhead was pointing down toward the earth. With his defenses weakened for the moment and his arms no yet recovered from the jarring, Papyrus knew he couldn't block it as well as he knew he could. Instead, the knight leaped backwards, away from the point of impact and watched with some fascination as she drove the weapon into the ground, dirt shooting up like a geyser.

He didn't get time to admire the crater she left behind as aqua colored spears flew out from the dirt smog. The skeletal knight grunted in annoyance as he batted them aside, slicing a few before they reached him. His eyes widen a little as he realized it was, again a distraction, spying Undyne as she sped out from the smog as well. She swung her weapon as hard as she could, aiming to try to knock him out as fast as possible.

Undyne was fast but Papyrus was faster at this range.

He crossed his swords before him and caught the attack, locking their weapons together and clashed in a battle of strength. He grinned at her. “Congratulations, Captain. You are strong as you say,” His grin sharpened, “But let's see if you can keep that up.”

“Bring it then, Papyrus!”

“As you wish.”

His grin widen as he spun in place, his swords using the teeth on the backs of the blades to clamp tighter on spear and threw her over his shoulder. The spear fizzling out as she passed over head in shock, caught off guard by the counter. Undyne hit the ground hard on her back, her breath escaping her but rolled aside, missing his follow up by a scant amount of time.  Her helmet had popped off but she kept rolling, coughing to get air back into her lungs as the skeleton turned himself into a windmill of death. His swords swinging in wide arcs, slicing at the dirt and grass, trying to dig the blades into her. The swords had nipped at her armor, doing little damage but it was geared to prevent her from retaliating. She had to stop his attack in order for her to even stand a chance.  

The fish warrior slapped a hand against the dirt, a spear thrusting upwards from ground and repelled the windmill of swings, forcing Papyrus' arms to bounce out of rhythm. Undyne rolled her feet, another spear in hand and dashed forward, the spear head a blur of movement as she struck him repeatedly as fast as she could. She didn't dare stab at any vital points, afraid that in the frenzy of battle she could kill Papyrus in the heat of it all. Instead, she focused on wearing him down, striking at points that would cause damage without killing him.

The skeletal knight growled as Undyne began her relentless barrage but he didn't take it lightly. Several had struck him hard but the majority he parried and deflected as he struck back with the same speed and power. Both spear and swords became blurs as they traded blows, striking limbs and marring armor. But Papyrus gave a chilling smile; he knew… he knew very well she was aiming to wear him out. He already told them that if they lacked the intent then there was no way they could overcome him. Still, it was… amusing to see his former mentor struggle to bring him down.

But the best part?

Oh the very best part?

It seemed as if the captain had all forgotten the lessons she taught him.

Never go easy on the enemy.

Papyrus flipped one blade to hold in reverse, the teeth of the back of the blade now taking the dominate side. He swung it hard, hooking the teeth to the heads of the spear and jerked it aside, snapping the point off. He drank in Undyne's expression of shock at the feat as the magical spear shattered in her hands. 'Tsk tsk. You should know better than to leave yourself wide open!' His grin turned shark-like as her stunned looked switched to that pain as he backhand slammed the teeth of the other sword against her chest with surprising force. The teeth puncture through and tore at the armor, ripping strips from it as she flew back from the blow. Several bones shot after her in a follow up.

The fish warrior hurtled back, screaming in both shock and pain. 'How…? How did he do that!?' No one had ever shattered her spear before! The thought was banished as she managed to twist in the air to get her legs under her before landing, gritting her teeth at force that jarred her legs. She didn't get much of a chance to dodge as the bones caught up to her and rammed into her, tearing a cry of pain from her as they sent her sprawling onto her back. She panted as she struggled to her knees and eyed Papyrus racing forward for another attack. Her hand touched her chest armor and flinched at the buckled and mangled metal. Thankfully the armor had saved her from a crushing blow but the teeth still left cuts on her chest.

“Holy shit… if this is what Papyrus could do without holding back… then I don't know who's in more trouble… us monsters in the underground or humanity.” She whispered to herself, throwing herself to the side in evasion of another Gaster Blaster attack, the beam decimating several trees behind her. She sent off another barrage of spears at him, trying to buy some time to recover. “Who the hell am I kidding? Both are royal screwed. Hell, if I hadn't fought Asgore before, I'd say this Papyrus is stronger or equal to the king.”

Bones peeked from the ground under her and only had seconds to let out a string of curses before smaller bones launched themselves at her in attempt to trip her. She bounced lightly on her feet, avoiding them, awkwardly dancing around them as the ground came alive with dozens of small bones. As she pranced to avoid them as best as possible, several others turned in place to target her before erupting from their places, slamming into her sides in a pincher, digging into the armor that protected her body. It saved her from being skewered completely, it still delivered a painful blow, cracking one of her ribs. Her armor wouldn't be able to protect her for long, of that she was certain. Another blow and the magical metal would shatter, not that it would matter… she was dipping dangerously below half heath.

Anymore and she'll be dust.

A lone bone peeked from the ground before her.

Undyne gritted her teeth as she glared at it. Well, so much for not being skewered. “Fffuuuck...” she hissed as she struggled against the bones that kept her trapped where she was.

“Congratulations, Captain.” Papyrus smirked, his eyes still burning that eerie orange flame. The bone slid out a little more from the ground, aligning itself to pierce the former captain's body. “That was quite the battle. You ARE as strong as you had claimed.”

Undyne directed her glare toward him, lips pulled back in a snarl at his arrogance. If killing this Papyrus didn't mean that her dear friend would also die at the same time, she would enjoy punching his teeth to the back of his skull for mocking her.

“Sadly, Captain… this won't happen again.” The knight's smile turned deadly, the bone in the ground, sliding further out to catch her attention. Undyne ignored it, her gaze trained on her enemy. Papyrus allowed himself a secret smile at her focus. Just as strong and stubborn as he knew her to be. A pity that it'll all end right here… right now. “I'll end this quickly for old times sake.”

He flicked his hand and the bone shot out from the ground like an arrow, aiming to spear the warrior and reduce her to dust.

Undyne shook slightly in fear but refused to tear her gaze away from Papyrus, glaring at him. If this was it then… she did all she could to buy Sans the time he needed. The rest was left up to him. She closed her eyes, summoning an image of her greatest treasure that was so dear to her. 'I'm sorry Alphys… I-'

CRACK!

The sound startled Undyne out of her trance, knowing that wasn't the sound of her turning into dust. That was the sound of something hard shattering against something equally as hard. She blinked against the bright green light that flashed before her, recognizing it. “What..?”

The bone that had been designed to deliver Undyne's death shattered against the familiar green barrier. Another large crack had formed on it, showing the amount of power behind the bone that the shield had struggled to keep away from her. Once again, the little green heart hovered before former captain protectively as it continued to maintain the shield.

Beyond the shield was Papyrus, glaring in rage as his attack was again blocked by the damnable human soul. If it weren't for the fact he needed this soul to complete the log time plan of breaking the barrier with seven human souls, he would break the damn thing into a million of pieces for being a thorn in his side.

But…

...Fuck it. He was in the human world. How, he wasn't sure but that just meant there were plenty of human souls to harvest. Shattering one wouldn't make much of a difference, now would it?

The knight shot forward.

The heart quivered in anger, reinforcing the shield it as best you could and braced for impact. Sword met shield and it was the most jarring thing you felt in your life. The cracked deepened and another formed, thinner ones webbing across the surface, evidence of the amount of force behind the knight's blow. The shield held but you knew it couldn't take another hit like that again without shattering.

For a split second, a strange expression ghosted across Papyrus' face and his eye flickered in recognition the same amount of time. A phantom image of you shimmered into view, blocking his attempt of killing Undyne. Arms and legs spread wide in the universal protective stance, face set in a stubborn glare. Friend or not, you'll be damned before you let the knight come within an inch of killing the fish warrior.

Somewhere in the back of his mind, Papyrus had an inkling about the way you held yourself. It… it confused him. Before, he saw you shaking and screaming in fear of him but now..? He could almost swear that he saw that look before…

It took him a long moment before the expression dully came to mind. He knew what that was now...

You were determined to protect Undyne with your life.