It is the age of the civil wars. The land is divided by powerful warlords, who constantly fight each other. Any internal power struggle is an invitation for your neighbors to attack. So it is decided that the firstborn child, regardless of gender, would become the head of the family. The result of this was the birth of the Princess Generals.

Disclaimer: I own nothing about Ambition of Oda Nobuna or Kamen Rider. The only thing I own here is my OC.

Sixth Slice: Net Worth

'So this is Bujin Kiva? I guess his armour design was based on Count Dracula or something,' thought Motoharu to himself. The vampire element did make sense of sorts. The small size of Kivat allowed him to trail anyone without being spotted easily. The bandit mentioning red probably referred to Kivat's red eyes. And hypnotism along with vampiric blood transfusions to enhance a person's strength is common in vampire stories he remembered.

Did Bujin Kiva also have traditional vampire weaknesses like holy items and the sun? Honestly, Bujin Gaim had his doubts since this is supposedly a heroic character from some other series and would likely not have that obvious a weakness. He'll have to see when the sun rises.

Right now, he needs to put a plan together on the fly on how to fight this new enemy. Maybe he can get Bujin Kiva riled up and force him to make mistakes. "To think someone like you would be aiding that boy. Tell me, what type of rewards were you expecting for your service? Or did you merely want him in charge of the clan so you can use him as you see fit?"

Bujin Kiva's yellow optics glowed, reflecting the fury in his voice. "Don't lump me in with those other human slime balls! They only had their self-interests in mind, wanting to see Nobukatsu as the head so they could improve their own standing in the Oda clan!"

'Looks like I touched a nerve. Let's keep prodding a bit.' Bujin Gaim kept his charged weapon ready in case the other Rider tried something. "That doesn't really answer my question though."

"What I'm doing is protecting the boy's smile with minimum bloodshed. If you were a true Rider, you would have known that from the start," replied Bujin Kiva, pointing a finger at Bujin Gaim for emphasis.

That explained the delay tactics with those bandits. Good to have one mystery solved. "The problem I have is that the smile he wears is not genuine. It's the result of being surrounded by self-centered people. The smile has no worth and by extension, one can say that Nobukatsu-san has no worth."

"You can't just slap a damn price tag on a young life!" growled the other Rider.

"I'm not the one slapping a price tag on anything. It's the current reality that forces those in power to make the tough choices," chided Bujin Gaim. "Like it or not, this country and the world has a finite amount of resources to sustain each human life. Trade-offs must be made and the value of lives must be evaluated by those who are in a high position like Nobuna-sama. So one should learn critical life lessons and apply them appropriately to raise their value in the eyes of others. But more importantly, that drive to learn should derive from the person's own will to improve!"

"My own will?" asked Nobukatsu.

"That's right. And when the Death God inevitably comes to claim a soul, that person can look it straight in the eye without shame, knowing that they did all they could in life to improve themselves and raise their own net worth." Motoharu paused for a moment to let some of this sink in. "As he is now, Nobukatsu-san's life has minimal value. But I intend to change that."

"By making him a sacrifice and sending a message to his sister's enemies?! Like I'll let you!" Bujin Kiva's left hand reached to the left side of his belt which held some objects that resembled whistles. With one swift motion, he grabbed the one which had a purple colour. "Know that you brought this extinction on yourself!"

"You're not getting it, dumbass!" shouted the Blood Orange warrior in frustration.

Bujin Kiva's only response was to bring the purple object to his belt and insert it into the bat buckle's mouth. "DOGGA HAMMER!"

"NOBUNA! NOBUNA! NOBUNA!"

"Ah, this is kinda embarrassing," muttered the blonde warlord on top of her horse while the men around her chanted her name in pride.

"It is the plan that will lead to the path of least bloodshed," replied Niwa at her side. "It's a good plan from Saru, demoralizing your brother's army."

"Maa… I guess."

Niwa flipped open her fan to hide her teasing smile. "You're just disappointed that Saru's not here chanting your name as well."

In an instant, Nobuna's face went as red as the cape she wore. "T-that's silly! Don't say stuff like that, Machiyo!"

The tactician didn't have time for any further teasing as everyone all felt a brief tremor. Even the army stopped chanting their commander's name in confusion. "What was that?"

"It came from inside the castle!" reported Goemon, her shinobi senses sharp as ever.

"But Saru already settled everything, right?!" Nobuna was cut off when she heard the sound of something heavy colliding with armour before being treated to the sight of Bujin Gaim flying in the distance from the castle and deep into the woods.

"CRAAAAAAPPPP!"

The flying Rider's curse was cut off by a wolf howl coming from inside the castle accompanied with a cry of "GARURU SABER!"

"You won't escape!" Another armoured figure leapt from the castle courtyard. His appearance had changed and this time, the left arm was clad in blue armour, the optics were blue as well and his right arm wielding a jagged sword. With inhuman speed, he began his pursuit of Motoharu.

"That monkey…!" Nobuna was about to direct her horse to begin chasing after the armoured man when she saw the gates of the castle open and a single horse carrying Nobukatsu and Katsuie emerged.

"Nobuna-sama." Katsuie did bow her head briefly in respect. "It is my fault that this happened. By not restraining Nobukatsu-sama earlier, I have failed as minister. Please take my life and forgive him."

"Riku, if I lose you, how am I supposed to fight the Imagawa?" Nobuna's eyes drifted towards her younger sibling before she slowly drew her sword.

"You're really going through with this, Nobuna-sama?" asked Niwa from the side.

"I said it before, Machiyo. I won't give him another chance. This time, he dies." Nobuna gripped the hilt of her katana tightly.

"Nee-san… no, Aneue," began Nobukatsu, surprising everyone around him greatly. "Please wait a moment."

"Why? So I could hear you beg for your life?"

"That's wrong. What I want to finish learning the lesson that Saru had been trying to teach me back at the castle," answered the young boy.

Nobuna's grip her sword briefly loosened in surprise at this new maturity. "W-what?"

There was a rare sense of determination in her sibling's eyes. "At that time, I saw what type of life I had been living. I don't want that. That's why I want to study under Saru and find my own will to improve. Even if it's just one lesson, I can at least take it to the next life if you decide to have my head."

"Nobukatsu-sama…" Katsuie was pleased to see the young boy mature but at this point, it would be for naught as Nobuna-sama seemed ready to take his life.

Eventually, the warlord lowered her katana. "It's Motoharu."

"Eh?"

"His full name. It's Sasaki Motoharu." It was a name she made an effort to remember as a small act of compensation for how she drained the life out of the red trinket back at the temple. "You won't be allowed to call him Saru unless he permits it. And you shall address him properly as your teacher, got it?"

"I understand," replied Nobukatsu.

"Princess, what have you decided?" asked Niwa, knowing that there was more behind this act of benevolence.

"Nobukatsu, I will stay my hand for the time being. Long enough so you can complete your studies under him. At the next sunset, you will come see me to discuss your self-development plan and what role you will be playing in the household."

The boy smiled happily before bowing in gratitude. "Thank you, Aneue! Katsuie, let's go."

"Yes, my lord!" The busty general bowed as well before her horse galloped away to the forest where both armoured warriors were supposed to be located.

"Machiyo, can I leave clean up here to you?" asked Nobuna as she sheathed her katana. "I'm going to find Saru and get more info on that other armoured fighter."

"Leave it to me."

"Thank you. I hope the cuckoo can sing this time." With that, the blonde warlord directed her horse to follow her brother and Katsuie.

'This plan of Saru's… not only did it make Nobukatsu-sama grow up a bit but it allowed Nobuna-sama to spare her sibling without losing face or being seen as weak.' Niwa smiled once before closing her fan.

"Ninety points."

The forest was really dense with a lot of trees. That also meant a lot of good ambush spots and not exactly a lot of room to easily move around in. Bujin Kiva's sword form had not been ideal for this type of combat environment and with the limited open space; Bujin Gaim had been able to control the flow of battle in the straight sword fight. That was until Bujin Kiva took out a green whistle and brought it to the bat's mouth. "BASSHAA MAGNUM!"

The optics changed colour from blue to green for both the bat on the buckle and Bujin Kiva's helmet itself. The chest armour along with the right arm turned green and the other Rider got armed with a green looking pistol. A second later after the transformation occurred, a few rapid shots of high pressure water forced Bujin Gaim to take cover. "Bringing a gun to a swordfight… you're really pulling out the stops!"

"I told you before that I won't let you escape!"

Bujin Gaim was forced to move further back for better cover as Bujin Kiva sent another volley of shots his way. 'Che… how am I going to do this? I don't think my skills are advanced enough to the point of deflecting the shots with my blades!'

As he took a moment to catch his breath, he heard a familiar dual voice address him in his mind. "Looks like you're in a bit of a bind, Lord-sama."

In the meantime, Bujin Kiva had switched strategy a bit as he fired some shots on surrounding forestry to send debris coming down on Bujin Gaim's area in an attempt to force him out. So far, Motoharu continued to weather the storm by not staying in one spot too long. "Kinda busy here! Is it that important?"

"Well, we would think that allowing you to access more of our power is rather important. After all, you have been working hard and are taking the right steps," replied Bujin Double.

"Huh?"

"Look at your Lockseed." Bujin Gaim reached to the right side where his Joker Lockseed had been stored. Eventually, he saw the right part of the Rider's face and the Lockseed body change colour from black to green. "Consider your probation completed."

"You have real good timing. Let's see if you can even the odds a bit," muttered Motoharu as he pressed the unlock mechanism.

DOUBLE!

Bujin Gaim quickly swapped in the new Double Lockseed and put it into place on his buckle.

LOCK ON!

One tap of the Cutting Blade later caused his armour to swap out while the same guitar riff played in the background. This time, the Pulp Eye had two colours, the right side green and the left side purple. The chest armour also had that same feature with the right side being predominantly green and the left side black.

DOUBLE ARMS! CYCLONE, JOKER, HA-HA-HA!

Immediately, a blue firearm appeared in the right hand of Motoharu. 'A firearm…?'

"This is the Trigger Magnum. With this, you can counter the Basshaa Magnum's blasts," explained Bujin Double.

'Right.' This was going to be weird. He had no firearms training whatsoever and he doubted that he could handle firing the weapon and handling the recoil. Still, this wasn't a typical firearm so maybe he wouldn't have to worry about the issues when it came to real guns. 'Here we go!'

Motoharu stepped out of his hiding spot and fired a few shots of his own to force his enemy to back off for a second and reassess the situation. "Joker Arms…? No, that's not it…"

Bujin Gaim didn't give his enemy another moment to think as he hurled his Musou Saber forward like a javelin and began running towards his opponent at the same time. With only a split second to react, Bujin Kiva opted to jump in the air while readying a shot with his magnum. But as he fired the first shot, Motoharu slid forward like a baseball player feet first. The blasts from the Basshaa Magnum missed his moving head by inches while one hand went to his Cutting Blade to tap it once.

MAXIMUM DRIVE!

With his Trigger Magnum charged, he pointed it upwards and fired it directly at the airborne Bujin Kiva, sending him tumbling to the ground. Once he saw his shot connect, Motoharu got up to keep his weapon aimed at the enemy. "Now are you going to listen to what I have in mind for Nobukatsu-san or am I going to have to beat it into you?"

"I'm not done yet!" As soon as those words left Bujin Kiva, Motoharu heard the sound of water and saw that his feet were submerged in a shallow pool that covered quite a large area. Bujin Kiva took advantage of this pause to 'skate' away to safety so he could regroup.

'Dammit!' Bujin Gaim quickly grabbed his Musou Saber stuck in a tree and ran to catch up in time to hear the bat buckle announce a new form.

"GARURU SABER! AND DOGGA HAMMER!"

Bujin Kiva's form shifted again. The optics returned to their yellow colour while the chest armour turned purple. The left arm was covered in blue armour while the right arm was covered in green. In a flash, Bujin Kiva whipped out a big purple hammer, the same one that had hit Motoharu before. "Prepare yourself!"

"Kiva, stop!" The voice of Nobukatsu was enough to stop the fight. "That's enough!"

Bujin Kiva saw a pair of horses making their way to them. One of them carried Katsuie and Nobukatsu while the other carried Nobuna. "Nobukatsu… is riding beside his sister? Why?"

"We've come to an arrangement. There's no need to continue fighting," announced Nobuna.

Silence reigned for a few moments before Bujin Kiva finally lowered his weapon, indicating that he was ready to listen. "Explain."

"Nobukatsu-sama has been really affected by Saru's words. They've changed him for the better and he decided that he wishes to continue learning," explained Shibata.

Motoharu already had a feeling where this was going. "So that means…"

"I'll be under your care, Sensei!" Nobukatsu bowed from his spot on the horse.

Well, this certainly wasn't that bad of an outcome. "Very well. Of course, my main duties will be to Nobuna-sama first and to see to whatever she needs me to do."

"There won't be any problems. I'll make sure you have enough time to teach him properly," assured Nobuna.

That's good to know. Now hopefully, Bujin Kiva would be fine with this. "So what do you think, Kiva? Can you accept me as Nobukatsu-san's teacher?"

"… We're not alone." The eye of the Dogga Hammer seemed like it was tracking something. Once it stopped on a specific spot, Bujin Kiva whipped out his Basshaa Magnum and fired a few shots towards the area. "Come on out!"

This forced a previously invisible figure to become visible again and drop to the ground from the tree branches above. He was donned in full armor which consisted of a dark magenta, black and white combination. An 'X' was on his chest and left shoulder. The eye optics were a dark green colour and had a little sinister feel to them while a violet mark was on the forehead of the helmet . A silver buckle was on his waist with a silver case on the side. "That hammer can detect invisibility, huh? I'll keep that in mind for next time."

"Another armoured warrior like Saru?" Nobuna drew her katana in case she needed to fight. "Who are you?"

The new armoured Rider merely dusted his hands a few times. "I'm just a passing through Bujin Rider. Remember that."

That little phrase was more than enough for Bujin Kiva's temper to flare up. "Bujin Decade…!"

TO BE CONTINUED…

Took me a while to get this out and now I feel somewhat satisfied with this.

Now to respond to some reviews:

Oath: Out of all the things to nitpick, you zoom in on Lockseed sounds? I find that a bit funny. In any case, I'll keep your words in mind for any other Rider Lockseed collected but for the Joker one, the in-universe explanation for the different announcement is because it was a prototype toy in the first place. The feedback from the Toei team would have caused those lines to be re-recorded and inserted for the final product.

Toa, Vanishing Raptor: I tried to make Bujin Kiva a hybrid of sorts. He has the heart of a heroic Rider and dislikes shedding blood but his methods in dealing with his enemies can be brutal just like King if he feels that violence is the only option. I hope that came through here.

New Universe: Inves and Helheim forest will show up periodically with random Cracks. The Nobuna cast will not be getting Drivers (Sengoku or Genesis) in the near future. The Kurokage Troopers will not be showing up in the near future. Yes, Saru will get one vehicle Lockseed.

Please don't forget to check out my other Rider crossover fics. If you want them to come out with more updates faster, write some more reviews for them so I can consider changing priorities. Otherwise, I will be focusing on this story.