We see the view of the Beacon Academy student dorms, where Pyrrha is looking out the window sadly as Ren loads StormFlower and Nora is jumping on her bed in the room for Team JNPR (Juniper).
Nora: "How come Jaune gets home so late?"
Ren: "He's become rather scarce since he started hanging out with Nick more often, lately."
Nora: "That's weird... Doesn't he know we have a field trip tomorrow? We need our rest!" (she proclaims this while twirling in midair so her back hits the covers)
Pyrrha: (angrily) "I'm sure our leader knows exactly what he's doing."
Nora and Ren exchange glances, not knowing that Jaune himself is looking in through the crack of the door.
Nora: "Mmmm... I guess so."
Jaune hangs his head and closes the door, just as a voice interrupts his thoughts.
Ruby: "Hey, Jaune! (startled, Jaune turns around to see her in her pajamas, and she giggles at his reaction) Long time, no see! Did you lock yourself out again?"
Jaune: "Oh, uh, nope! (raises his Scroll, attempting to laugh) Got it!"
Ruby: "So! Where have you been lately?"
Jaune: "I, uh... (he tries to come up with something, but just sighs and lowers his head) I messed up. I did something I shouldn't have, and now Nick has me on a training regimen, and Pyrrha won't even talk to me, and... (breathes heavily through his nose) I'm starting to think coming to this school was a bad idea. (presses his back to his team's door and slides down to the floor in depression) I'm a failure."
Ruby: "Nope!"
Jaune: (looking at her in surprise) ""Nope"?"
Ruby: "Nope! You're a leader now, Jaune. You're not allowed to be a failure."
Jaune: "But... what if I'm a failure at being a leader?"
Ruby: (thinks about it for a moment, then gives her answer) "Nope!"
Jaune: (laughs as she joins him on the floor) "You know, you're not the easiest person to talk to about this kind of stuff."
Ruby: "Nope! (as Jaune leans into the door some more) Jaune, maybe you were a failure when you were a kid... (Jaune groans and sinks lower to the ground) ...and you might've even been somewhat of a failure the first day we met! (he groans and goes lower still) But, you can't be one now. You know why?"
Jaune: Uhhh, because...?
Ruby: "Because it's not just about you anymore. You've got a team now, Jaune. We both do! And if we fail, then we'll just be bringing them down with us. (she gets up and places her hands on her hips as she speaks) We have to put our teammates first, and ourselves second. Your team deserves a great leader, Jaune. And I think that can be you. (she walks over to her door and opens it as Jaune, now slightly inspired by her words, watches her wave) I don't know what this "training regimen" Nick is putting you through, but you should totally trust him to know what he's doing. Have a good night, Jaune!" (she goes inside)
With new energy, Jaune pushes himself off the ground and faces the door, ready to turn the knob and face his team, but his Scroll beeps and he pulls it off of his side to open it, seeing Nick's contact relaying a message.
Nick (on-Scroll): "Hey! It's me, Nick! I know you're probably busy with that Dust project you have from class as homework, still willing to help you with that by the way, but I'm gonna need you to get to the usual spot. (Jaune sighs with exhaustion in response) We also have that field trip tomorrow, and it's at a location where there's Grimm, quite a lot of them, too. And, you're also the one who accepted my offer to help you get stronger, so you shouldn't expect me to cut you any slack."
Jaune closes his Scroll just when it begins to beep again. Sighing, he wearily heads down the hallway and away from his room.
Time Skip...
An overhead shot of a forest bustling with red leaves and gray trunks is seen as we descend to see Glynda leading teams NAAE (Unimaginable), RWBY (Ruby), and JNPR (Juniper) through the area. Team Trash-Face, by which I mean Team CRDL (Cardinal), was originally suppose to join them as well, but they were forced to stay at Beacon to take makeup classes instead, due to missing so many of them, given that they keep getting sent to the infirmary by Nick, with the people supervising them being both Professor Port, and Professor Oobleck. With this being Nick's idea, and Ozpin agreed to it.
Glynda: (to the group) "Yes, students, the forest of Forever Fall is indeed beautiful. But we are not here to sight-see. Professor Peach has asked all of you to collect samples from the trees deep inside this forest, and I'm here to make sure none of you die while doing so."
The group stops, and Jaune, grunting and carrying a large case with six empty glass jars on top, tries to catch up with them and ends up bumping into Nick.
Nick: "You good, buddy?"
Jaune: "Yeah, I'm good. But, um...why do I have to carry these things again?"
Nick: "Basically, the bag is like weights. It's to help you build up body strength, and work on your stamina. Two birds, one stone."
Jaune: "Right..."
Glynda: (still instructing her group, holding up a full jar of their objective) "Each of you is to gather one jar's worth of red sap. However, this forest is full of the creatures of Grimm, so be sure to stay by your teammates. We will rendezvous back here at 4 o'clock. Have fun!"
While Yang and her sister smile at one another, Jaune attempts to (noisily) sneak away from Nick, but the Kamen Rider sees this and grabs Jaune by the back.
Nick: "Come on, buddy - let's go!"
Jaune miserably looks up at his team, where Nora and Ren are already walking into the forest's depths and Pyrrha is staring sadly at the scene. Dropping his gaze, Jaune turns and follows Nick, to the disappointment of a sighing Pyrrha before she continues on. Nick is making himself as comfortable as possible by leaning on a tree, while Jaune returns with his weapon, which is a sword and foldable shield called Crocea Mors, as Nick gets up and walks to him.
Nick: "Alright, let's get to it."
Jaune: "Am I not allowed to take any breaks?"
Nick: "Of course you're allowed breaks. I'm not trying to push you too far. I'm just helping you get stronger. Besides, I can tell that things are a bit awkward between you and your team."
Jaune: "Pyrrha's still mad at me."
Nick: "Yeah, I can tell. Anyways, we'll be focusing on one of the new upgrades I added to your weapon."
Jaune: "I still can't believe you insisted on upgrading my weapon for me."
Nick: "Again, I offered to help you get stronger, so I'm gonna help you get stronger. That includes upgrading your weapon for you. Besides, don't you like what I did?"
Jaune: "No, no, I really appreciate it. So, which upgrade are we testing?"
Nick: "It's the upgrade that your sheath now has the ability to become a wider blade for your sword by extending the sharpened edges of your shield, turning it into a longsword. Doing so adds the weight of the shield behind your blows and allows you to wield it two-handed, increasing the force of your attacks."
Jaune: "Got 'cha."
Nick: "Plus, with the addition of you shield now able to use Hard-Light, Wind, Gravity, and Ice Dust, you can increase your defense. And, while your weapon is a longsword, you can use the Hard-Light Dust to extend the blade further, and increase your offense further."
Jaune: "That's cool."
Nick: "Try to sound a little more pumped about this, will ya? Anyways, right now we'll focus on "Longsword Mode", without the Dust, alright?"
Jaune: "Yeah, sure thing."
Nick: "Great, let's do this."
The two boys then get into position, as Nick pulls out a new Driver. This one being black with three large slots on the top, gold symbols underneath, and a red sword handle on the right-hand side, with it having a strange X-shape emblem on it. Nick then places it on his waist.
Driver: Holy Swordriver!
Nick then pulls out a small, red book, with the image of a red Dragon on the over, with the title "Brave Dragon" on the top of the cover, as Nick then opens it, showing a page with the side image of a Dragon breathing fire.
"Brave Dragon" Book: Brave Dragon! "There was once a God Beast possessing a great power that would destroy everything..."
Nick then closes the book, and places it into the right-hand slot of the Holy Swordriver, as a larger, and I mean massive, astral projection of the "Brave Dragon" book appears floating in the air behind Nick, as he then grabs the sword handle.
Nick: "Kamen Rider!"
Nick then pulls on the handle, resulting in him pulling a small sword out of the Diver, which then gets covered in an Aura of fire, and immediately grows into the size of an actual sword the second it's pulled out of the Driver. The astral projection of the Brave Dragon book opens, showing a page with the image of what appeared to be the associated Kamen Rider.
Holy Swordriver: Raging Fire draw sword!
Nick then slashes the air in front of him with his sword, causing a flaming X to form in front of him, as a Red Dragon flies out of the book.
(Whoa-oh-oh-oh~) Brave, Dragon!
The Dragon then circles around Nick, covering him in a flaming tornado, before merging with him. This resulting in the Dragon forming a suit on Nick, with the Dragon's head on his right shoulder, while the right side of his body also being red, the middle being white, and the left side being black, and the flaming X forms an X-shape visor on Nick's helmet, as he was now the Flame Swordsman, Kamen Rider Saber.
Raging Fire, One Volume! When the Dragon of Valor and Flame Sword, Raging Fire, intersect, the crimson sword will penetrate evil!
KR Saber: "I will be the one to decide this story's ending!"
If you can probably guess, Nick has a habit of saying a Kamen Rider's catchphrase whenever he transforms into them.
Jaune simply sighs, and combines his sword and sheath, forming a longsword. The two of them then stand in ready positions, before charging at each other, clashing their respective swords, unaware that a group of strange humanoid creatures where watching them from behind some trees.
Creature: "Jya..."
Meanwhile, we see the rest of the group doing their assignment in collecting red sap.
Yang: "Hey, does anyone know where Nick and Jaune went?"
Pyrrha: (upset) "I saw Nick drag Jaune somewhere. Not sure why..."
Ruby: "Well, Jaune did tell me that Nick gave him a training regimen of some kind. Also, on our way here, Nick told me that this forest reminds him of his home."
Amber: "How does this place remind him of his home?"
Ruby: "I'm not sure. When I asked him, he just said it did. He didn't really say much else about his home, and dropped the subject."
Erza: "That's kind of weird. Why would he drop a subject about his home?"
Ruby: "I don't know. When I asked him where he's from, he just said he's from a small town up north in Mistral. But for some reason, I feel like he wasn't being honest."
Blake: "Do you think he's keeping secrets about his origin and past?"
Weiss: "He is a very strange person. I mean, we don't know much of anything about him. He's a complete mystery. His Semblance is extremely powerful. He has an abnormal amount of Aura. He's a Dragon Faunus. A type of Faunus that nobody knows about, or even knew existed until Nick showed up. He knew about the existence of Ki, something nobody has ever known about. And his abilities as the Kamen Rider also adds to the list, sense Nick has been a part of almost every major event in history, even before, during, and after the Great War. Not to mention, Steel and those "Turbo Modes" he can use. Plus, with his reputation, it's hard to understand why he's attending Beacon as a student. Why not a teacher, or something? And now we know he might be hiding where he's from. You can't help but question what he's keeping secret from us."
Ruby: "Hey, Amber. You've been friends with Nick since we all arrived at Beacon. Do you know anything?"
Amber: "No, I'm afraid not. I knew he was the Kamen Rider. But other then that...I hardly know much about him, myself. He's as much of a mystery as he is to the rest of you."
Ren: "Well, it's clear that Nick is quite the enigma, one of which we barely know much about. But, he has done so much for the people of this world, that I think it's safe to say we can trust him. And, perhaps one day, he will tell us what he hasn't yet. We should all just be patient."
Everyone then nods, agreeing to wait until Nick is someday willing to tell them the truth about himself and his origins. Suddenly, the strange creatures came out of the forest, and charged at them.
Creature: "Jya!"
Yang: "What the heck are those?!"
Weiss: "They look like Grimm, but I've never seen ones like those before!"
They all then began fighting the strange creatures. While this was happening, Saber and Jaune were still training, until they heard gunshots, catching their attention.
Jaune: "Were those gunshots?"
KR Saber: "The others might be in trouble. Let's go help them!"
Jaune: "Y-Yeah, R-Right!"
The two then ran back to the others, and once they got there, they saw the rest of the gang fighting the strange creatures. Though, Saber immediately recognized the creatures, which made him greatly confused.
KR Saber: "Wait, hang on a minute...are those...?"
Before he could finish, some of the creatures started attacking him and Jaune as well, to which the two boys slashed the strange Grimm with their swords.
Yang: "Glad you two could make it to join the party."
Jaune: "What the heck are these things?!"
KR Saber: "I think they're Grimm, but...why do they look like Jyamato?!"
Weiss: ""Jya-what"?!"
Atalanta: "Alpha, do you know what these things are?!"
Ruby: "And, why are you already transformed? And what are you called in this Rider form?"
KR Saber: "Oh, in this form, I'm called Kamen Rider Saber. Or the Flame Swordsman. He's a part of a group of Riders known as "Holy Sword Riders", who each use a special sword known as a "Holy Sword", and books of great power known as "Wonder Ride Books". My Holy Sword is called the Flame Sword; Raging Fire, and my Wonder Ride Book is called "Brave Dragon".
Ruby: (looks amazed) "A Swordsman Kamen Rider?!"
Blake: "That uses books with special powers?"
Yang: "And can use fire, and has a Dragon-theme too?"
KR Saber: "Yeah. But right now, let's focus on taking these things down. And watch each other's backs!"
With that, Teams NAAE (Unimaginable), RWBY (Ruby), JNPR (Juniper) and Glynda all continued fighting the Grimm, while Saber was confused about the "Jyamato".
KR Saber: (thought, while fighting some of the "Jyamato") 'What the heck is going on here? And why do these Grimm look like Jyamato? It doesn't make any sense, because...Jyamato...don't exist...in this dimension! They only exist in Kamen Rider Geats' dimension, and I'm the only person in this dimension who even knows about the Jyamato. So, why do these Grimm look exactly like them? I would've known if these type of Grimm existed in this dimension a long time ago. I'll have to figure this out later, right now I have to focus on the battle. Better level up.'
Saber then slides his Holy Sword back into his Driver, causing it to shrink. He then pulls out two more Wonder Ride Books, one being red, and having the image of an eagle, with the title "Storm Eagle" on the top of the cover, while the other one is blue, with the cover showing the image of a sword, and the title "King of Arthur" on top of the cover.
"Storm Eagle" Book: Storm Eagle! "It is said that when this Steller's Sea Eagle appears, a ferocious tornado will occur..."
"King of Arthur" Book: King of Arthur! "A certain Knight King swings down the sword of poetic justice..."
Saber then places the "Storm Eagle" Book into the center slot of his Holy Swordriver, before then placing the "King of Arthur" Book into the left-hand slot. This resulting in larger astral projections of the "Storm Eagle", and "King of Arthur" books to appear floating in the air behind Saber, as he then grabs the sword handle, pulls the Raging Fire out again. This resulting in the astral projections to open, as their pages align with the "Brave Dragon" book, adding more design to the picture.
Holy Swordriver: Raging Fire draw sword!
A red eagle, and a blue knight carrying a sword then emerge from the "Storm Eagle" and "King of Arthur" books, respectively. The eagle then merged with the enter of Saber's suit, with it now having the eagle's head on his chest, while the knight merged with the left side of Saber's suit, mirroring the Dragon on his right side, with him also now wielding a second sword.
Tornado Dragon Eagle! Additional! King Arthur! Raging Fire, Two Volumes! A raging winged Dragon of the sky is clad in hellfire and burns everything to ash!
Now in a stronger form, and equipped with a second sword, which is called the Kingexcalibur, Saber begins to slash several "Jyamato". A group of the creatures began to huddle up, and circle around Saber, only for him strike all of them down with ease. Eventually, there were only a few "Jyamato" left.
KR Saber: "Alright, time to wrap this up."
Saber then holds both Raging Fire and the Kingexcalibur in reverse-grip fashion to summons a large red tornado. Then, after turning Raging Fire and the Kingexcalibur in proper-grips, Saber jumps into the tornado, igniting it to create a fiery whirlwind.
KR Saber: "Flame Tornado Slash!"
The flaming tornado then destroys all of the remaining "Jyamato", leaving zero remains of the creatures. After landing back onto the ground, Saber slides Raging Fire back into his Holy Swordriver, and closes the three Wonder Ride Books, before pulling them out of his Driver, resulting in him returning to normal.
Nick: (looks over to everyone else) "I think we should get out of here."
They all nod in agreement, thinking it might be for the best to leave, as they already have all of the sap they need. Later that night, on top of the dorm building, a uniformed Jaune stands on the edge and looks into the distance at the green lights of Beacon.
Pyrrha (off-screen): "No Nick tonight? (walks to his side) I thought you two had that training regimen?"
Jaune: (turning to her) "Nick said he wasn't planning to help me train anymore for some reason. Said there wasn't any reason to do so anymore. Pyrrha... I'm sorry. I was a jerk! You were only trying to be nice, and... I had all this stupid macho stuff in my head-"
Pyrrha: "Jaune! It's okay! (they smile at one another) Your team really misses their leader, you know. (she begins to walk to the exit) You should come down! Ren made pancakes! No syrup, though - you can thank Nora for that!
Jaune: (smiles, but holds out his hand) "Wait! (Pyrrha turns around, and Jaune looks sheepish) I know I don't deserve it after all that happened, but... would you still be willing to help me... to help me become a better fighter?"
Pyrrha turns around so a worried Jaune won't see her satisfied smile. She goes up to Jaune and suddenly pushes her leader to the ground.
Jaune: (whining) "Hey!"
Pyrrha: (standing over him with her arms on her hips and an evaluating tone) "Your stance is still in need of improvement. You need to be wider and lower to the ground. (she offers him her hand, which he graciously accepts, and they continue to hold on to and grin at each other) Let's try that again."
The scene then moves above the two and on the night sky over the school.