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Konosuba fic ideas to [STEAL]

Summary:

A collection of fanfic ideas (mostly Kazuma getting crossover powers) I wish to see expanded upon. Feel free to [steal] them but please, send me a link of you do develop or get ideas from them.

Notes:

A notorious blade passed down through generations of the Rodrigues family. The last user had it modified into a high-frequency blade, enhancing the already astonishing properties of the original metal and giving it an ominous crimson glow. An explosive charge housed in the scabbard enables a lightning-quick draw.

The more this blade is used, the better and effective it's user becomes in combat and vice versa. After a certain degree of mastery, it grants excusive new skills and abilities to the user to make them an unstoppable force in battle.

Music: The Only Thing I Know For Real

(See the end of the work for more notes.)

Chapter 1: The HF Murasama

Chapter Text

It doesn't say much anything about the cheats it gives, but.... just the fact that it's a high-frequency blade made for a quickdraw and makes you better at using it sounds kinda busted. Not even counting that it gives skills exclusive to it only.

 

Also, didn't that useless goddess say the last person she sent also picked a sword? I wonder, did he pick something like this or-.

"Hey hey, just pick one already. No one expects a hikiNEET to amount to much."

Those words ignited something inside Kazuma, a small spark to a flame. One that his parents had snuffed out prior to his self-isolation from the world. Suffice it to say, the real reason he even became a hikikomori in the first place were his shitty parents and their shitty fucking expectations. 

Fuck, I forgot about Kazuto. All this dying and isekai stuff kept me too occupied to even remembermy own brother. I hope at the very least he didn't laugh at the funeral. I mean, we weren't the closest but still I did raise him more than the workaholic bitch and the alcoholic dickhead. Fuck.

"So, have you decided?" Aqua again interrupted his thoughts. "It's that cheat right?" What an idiot, all this time and he just picks a lame sword."Then that will be what you go with."

Before he could even speak, the blue haired girl raised her arm and the card in his hand dissolved into shimmering motes of light that went inside his chest, electing a warm feeling within and in his hands was the HF Murasama in it's sheath. And just from a single look, it was mesmerising and felt equally powerful.

Before anything else, a ritual circle with runes started glowing beneath him. As he looked around in mild panic, he also saw Aqua (he is not calling her a goddess, not after what she said) also trapped inside it. With a beautiful Angel descending upon them.

After rebuking the blue haired supposed goddess, the Angel gave her the punishment: to help Kazuma succeed in eliminating the Demon Lord and only then, she would be allowed to return to Godhood for her disgraceful treatment of him was the final straw for her punishment. 

He couldn't help but take a small amount of satisfaction as the glow of the circle kept getting brighter and she started bawling for the consequences of her own actions.



Kazuma released a sigh, already tired of today's bullshit. Turns out the other guy Aqua sent here was a riajuu, also had a cheat sword, and wanted to fight him.

Truth be told, he'd understand no-respect the guy for wanting to cross their cheat swords to see which one comes out on top. Heck, even he was curious. {Gram} had the cheat to just cut through almost anything and unleash powerful blasts as long as only the idiot in front of him is wielding it.

The Murasama, on the other hand had a pretty impressive and violent history in all of it's previous users. It would make him a better fight- no, samurai just by fighting with it. It already turned him around from being the pervy, lazy, worthless scum to a slightly less pervy but moderately useful, somewhat disciplined and respected beginner samurai in battle.

No, what killed his enthusiasm for a fight was the fact that this white knighting blonde idiot was challenging him to take Aqua off his hands which:

  1. She don't wanna
  2. He's kinda creepy
  3. I don't get anything good outta this, and
  4. I fucking hate riajuus. Especially the blonde ones.

So, with another few minutes of this idiots incessant whinging and whining, and Kazuma's group trying to enjoy their meal, his rage finally overrode his restraint and he dragged the longsword user over to an open part of the street, people crowding along on the outskirts; waiting to end the debate on who would win a battle between Axcel's two rising star rookies: the Blessed Paladin vs the Bloodstained Samurai.

As Kyouya took his stance, the typical Knight one with both hands steady on the handle of a vertical Gram, Kazum took a deep breath to get his mind geared into battle zone. Subconsciously moving his body into a specific Iaido pose, left hand angling the blade and gently fingering the trigger; right hand lightly gripping the beautiful futuristic handle.

The atmosphere was thick with nervous fervour. The two men staring at each other for a moment until....

Kyouya made the first move, unleasing a blast of wind to get close and high over his target for a devastating downwards strike. The sword poised to cut the samurai in half. And it almost did until.

[Reactive Parry]

Using the very first skill he learned from his sword, and the explosive charge stored in the sheath, the sword ejected in a swift red blurand effectively met the knight's blade attack just before it could make contact with his body, repelling the airborne man away in an emission of sparks. 

Kyouya fell to the ground, but not before picking himself up and getting into a stance again, before seing the beautiful red blade pointed at his direction, its user sending him a cocky smirk.

"Well, then.... Show me a good time, Masutguchi" the smirk turned more demented, goading him even more.

"For the last time, My name is Mitsurugi!" As he jumped back in with a flurry of sword striked from all different directions which were all parried or redirected effectively.

After a long onslaught, Kyouya noticed something throughout the fight, Kazuma never actually attacked him. Simply either parried or countered all his attacks. He took a break from his rapid slashes, breathing heavily, thinking of another way to attack when he heard 2 words that he would haunt his nightmares for a long time.

"My turn"

And then he saw Kazuma sheathing his katana for one moment, and disappearing from his sight with a boom. 

Then he heard the distinct sound of a sheath clicking shut. He slowly turned back to see Kazuma was now behind him. Next, a clattering sound on the floor, his sword at first glance.

Oh, I got disarmed in one go, that.... kinda amazing.

and then he felt PAIN.

MIND NUMBING, EXTRUCIATING PAIN.

On his right side.

He chanced a look and saw the arm and the armor on it was sliced clean off, leaking blood.

And then he passed out.