A/N: Welcome back to the fourth chapter of the All Worlds Alliance Missions - CROSSOVERDOSE and I'm glad that everyone enjoyed the previous one.

It's finally December! The final month of this year and of course... new games are coming out before the year ends. Games such as Acend: Reborn, Afterglitch, Aka, Art of the Rail, Burnhouse Lane, Cafe Owner Simulator, Chained Echoes, Choo-Choo Charles, Cities: Skylines - Financial Districts, Crisis Core: Final Fantasy VII Reunion, Crossfire: Legion, Cyber Hook, Dad's Monster House, Divine Knockout, Dragon Quest Treasures, Dwarf Fortress, Dwarven Skykeep, Elevator Action Returns S-Tribute, End State, Excavator Simulator, Goonya Monster, Hello Neighbor 2, High on Life, Hubris, Idol Janshi Suchie-Pai Saturn Tribute, Impaler, INFINITE GUITARS, Inner Abyss, IXION, Knights of Honor II: Sovereign, Krampus Kills, Kukoos: Lost Pets, Kynseed, Lil Gator Game, Lover Pretend, Marvel's Midnight Suns, Medieval Apocalypse, Moonshine Inc., Munchkin Digital, Need for Speed Unbound, New Joe & Mac: Caveman Ninja, Papetura, Paragon: The Overprime, Predecessor, River City Girls 2, Romancing SaGa -Minstrel Song- Remastered, SAMURAI MAIDEN, Ship Graveyard Simulator, Shirone: The Dragon Girl, Shredders, Solar Ash, Soukai Tenki, Spirit Hunter: Death Mark II, Sports Story, Stalcraft, Super Kiwi 64, Swordship, The Callisto Protocol, The Department/Trosedd, The Forest Quartet, The Outbound Ghost, The Walking Dead: Saints & Sinners - Chapter 2: Retribution, Togges, Two Point Campus: Space Academy, Valkyrie Profile: Lenneth, Warlords Under Siege, Wavetale, Witch on the Holy Night, WRC Generations – The FIA WRC Official Game, Yi Xian: The Cultivation Card Game and Zombie Cure Lab are the games I look forward on playing this month!

Number01BlazblueFan - Ren Tao is introduced in his middle school years in this story. Let that sink in.

And with that done, let's get this chapter on the go!

Disclaimer: I don't own any characters appearing in this fic except if it's my OCs which rarely makes an appearance.

-Somewhere in the Multiverse-

Unknown Warring States-like Forest, Unknown Warring States-like World

(Play Soul Calibur VI OST - Moon of Oblivion)

On top of a large mountain, we head towards an open area of a forest filled with cherry blossomed trees and in the middle of the aforementioned location, we see Kenshin Himura and Shiina alongside another figure having a discussion with a group of five figures.

The figure with Kenshin and Shiina is a tall young man with a fair complexion and muscular build. He has a spiky brown hair tied held up by bandana and he has brown-colored eyes. He wears an open white happi jacket with black trims over his abdomen that is wrapped with bandages, he wears a pair of white dogi trousers, his hands, arms & forelegs are also wrapped by bandages and he wears black slip shoes. This is Sanosuke Sagara.

The group of five figures consists of four females and one male.

The first female had a short frame and a fair complexion, she had a light-brown short & messy hair and she has reddish-brown eyes. She wears a brown jacket over baby blue long-sleeve sweater with a white hoodie, blue jeans and brown folded boots. This is Atra Mixta.

The second female had a slim frame and a fair complexion, she has a short reddish-pink hair with spiky ends held by a white headband and she has a pinkish-red orange eyes. She wears a long-sleeved cream shirt with a v-shaped blue line over a yellow collared shirt with a pink ribbon tie, she wears a blue miniskirt with white linings, black high socks and brown loafers. This is Himeno Awayuki.

The third female is a tall centaur with reddish-brown horse body alongside a bushy tail and brown hooves. She has reddish-orange waist-length curly hair with sharp horse ears on top of her head, she had reddish-brown eyes and large breasts. She wears a red blazer jacket and black knee-length short pants that covers her entire horse body. This is Himeno Kimihara.

The fourth female had a slim frame and fair complexion, she had an enormously waist-length blonde hair styled in a hime-cut and she has purple-colored eyes. She wears a red capelet with white linings, frilled collar and a large black ribbon tie over a red long-sleeved button dress shirt with folded cuffs, red calf-length skirt with white bands and frills, she wears brown boots and white gloves. This is Kudelia Aina Bernstein.

The male is very tall stature, he had a tanned complexion and a muscular build. He had a semi-long black hair tied in a messy ponytail, he had black-colored eyes and facial hair. He wears a blue saddle-like shoulder armor on his left shoulder held by a brown belt and clover-shaped buckle strapped across his body and on his left arm, he wears a black detached sleeves covered by red armor pads and a white arm gauntlet with blue straps. On his right arm, he wears a white arm gauntlet with blue straps and a white bandage wrapped around his abdomen. On his lower part, he wears a light-brown & red tattered waist cape held by a bulky red rope, he wears a black baggy pants with dragon designs, dirty-green shin guards with red bands and brown sandals. This is Heishiro Mitsurugi.

To summarize things, Atra, the two Himenos and Kudelia were purchased slaves from the Slave Fortress, they were bought by a rather deranged businessman who plans on doing something unpleasant to the girls but fortunately for the girls, they managed to get away from the man when a bright light took them away. Unfortunately for them, the girls found themselves lost in an unfamiliar world and with the chokers around their necks weakening them, traversing around this world is painfully difficult.

Heishiro, on the other hand, was just wandering in a plain field in his world when a bright light caught on to him and the next thing Heishiro knew, he is already in another world. Having experience of being in another world before, Heishiro decided to wander around when he came across the girls getting harassed by a group of bandits, so he decided to drive the bandits away, much to the girls' relief.

After introducing themselves to each other, Heishiro and the girls were once again confronted by the bandits who came back with more scoundrels in their ranks and when Heishiro was about to take them all on, Kenshin, Sanosuke and Shiina, whom were at the area at the time, arrives and decided to aid Heishiro in taking out the bandits.

After fighting off the bandits which forced them to retreat in fear, everyone decided to introduce themselves to each other with Kenshin explaining to Heishiro and the girls about the current situation and Sanosuke taking the choker off the girls' necks using a wind-up key.

"Aah~" Kudelia breathed out in relief, "It feels so good getting that thing off our necks." she admitted while rubbing the back of her neck.

Atra nodded in response, "Yeah." she uttered in agreement, "Those things are very uncomfortable." she described.

Himeno K. rubs her neck with both hands, "It was so heavy and bulky that I had a hard time breathing." she admitted.

"Thank you again for taking those chokers off our necks." Himeno A. expressed in gratitude while bowing her head at the same time.

"Don't mind, don't mind." Sanosuke reassured, "We've already rescued tons of people from the Slave Fortress before and taking off those damn chokers is the first thing we often do." he explained.

"So, what should we do now?" Kudelia asked.

"My friends and I are yet to leave this world until we finished our tasks." Kenshin replied, "However, we're sending you girls to our main base so you can get some rest." he stated, "I'm pretty sure that you're all tired from all the things you've experienced so far." he pointed out.

Atra sighed in response, "We really do." she admitted.

Kenshin then turns to Shiina, "Shiina, I'm going to open a portal and I want you help the girls get settled in the academy." he instructed.

Shiina nodded in response, "Hai - de gozaru." she complied.

Kenshin then turns to Heishiro, "What about you, sir?" he asked, "Would you like to stay in the academy for a while or do you want us to send you back home?" he asked.

Heishiro chuckled in response, "I appreciate the thoughts but I'm sticking with you guys for now." he replied, "This is not the first time I've been in this kind of situation, so like I said before I'm sticking around and help you out a bit." he stated, "Plus, I might meet some nice opponents whom I can take on." he added with a grin.

Kenshin chuckled nervously, "I-Is that so?" he acknowledged.

The scarred samurai then pulls out a small device in hand before pressing a red-button and this is followed by a blue portal opening before them, much to Heishiro and the girls' awe and surprise.

Shiina then turns to the girls, "Let's go." she beckoned.

"Once again, thank you for all your help." Himeno A. expressed in gratitude.

"And we wish you all the safety in this mission of yours." Himeno K. added.

Kenshin smiled in response, "No problem." he reassured.

And with that, Shiina and the girls entered the portal and a few seconds later, the portal vanished while leaving Kenshin, Sanosuke and Heishiro all by themselves.

Heishiro crossed his arms, "That is a convenient way to travel across different worlds." he commented, "It's a lot better than getting suck in by a bright light." he admitted.

"Yeah." Sanosuke uttered in agreement.

"Aside from that young girl with a scarf..." Heishiro mentioned referring to Shiina, "... do you have any more comrades roaming in this world?" he inquired.

"There are a few." Kenshin answered, "We're currently separated from them at the moment in order to finish our task faster." he explained.

"I think it's about time that we met up with them by the waterfalls." Sanosuke pointed out.

Kenshin nodded in response, "Then we should." he complied before turning to Heishiro, "Shall we?" he asked.

"Lead the way." Heishiro beckoned.


The scene then transitions to a large waterfall which is located some distance away from the cherry-blossom forest and on a dry spot next to the body of water, we see Sakura Haruno, Hinata Hyuuga and another figure facing a group of creatures known as Humandrills.

The figure is a young woman with a slim and voluptuous frame, and she has a large breast. She has a long brown hair tied in a high ponytail by an armored hair pin and she has gray-colored eyes. She wears a red skin-tight bodysuit with fishnet elements on each side of her hips, she wears a dark-brown body armor with her breasts exposed, she wears a blue-colored spaulders with a demonic face, a fishnet arm-sleeves underneath a blue armored gauntlet and red fingerless gloves, she wears a blue-colored armored kneepads with a demonic face, armored shinguards over red socks and armored slippers. This is Taki.

How did they got into this situation?

Sakura and Hinata were just scouting the area when they came across Taki and while hostile on each other at first, the three decided to work together after learning that Taki came from another world and is currently lost at the moment.

And when they arrived at the waterfalls, a group of Humandrills made their presence and are immediately became hostile towards them.

"I can't believe these things found themselves in this world." Hinata uttered in shock.

"What are these creatures?" Taki asked.

"Humandrills." Sakura answered, "They are highly intelligent creatures capable of imitating humans so much that they will mimic any trait they witness." she explained, "The Humandrills are extremely powerful due to their beastly physical prowess which greatly supplement their self taught fighting skills." she concluded.

"I see..." Taki uttered in acknowledgement, "Such troublesome creatures." she commented.

"We need to take them down." Sakura beckoned, "Even if we defeated these creatures at first, they'll just flee and would later come back with knowledge of how we fight." she explained, "So, taking them out for good is our only option." she concluded.

Hinata nodded in response, "Alright." she complied.

Taki grabs her katana, "I'll provide support." she offered.

"Then let's go!" Sakura beckoned.

Get Ready for Battle! No Escape!

"You seem like a traditional ninja, Taki-san?" Hinata pointed out.

"Traditional?" Taki uttered, "What do you mean by that?" she asked.

"Let's just say that we don't dress the same way as you do." Sakura answered.

BEGIN!

Sakura charges towards a group of Humandrills, "Chaa!" she shouted before punching the ground hard which decimated the pavement as the impact of her strike causes a chain reaction which then sends the creatures flying to the air. Hinata then thrusts her right palm forward and hits one Humandrill right on the chest area and the impact is so strong, the creature is send crashing to a rock.

"I cannot ignore your evil deeds." Taki uttered.

Taki kicks one Humandrill down before performing a magical ninja spell in order to triple herself into three. Afterwards, all three Takis slashed their way through their target before jumping into the air to become one again, Taki then takes down the helpless opponent in one fatal strike on the back of it's head, killing it on the process.

Sakura rushes forward and throws a punch on one humandrill's stomach, she then slams the her target into the ground, leaving the creature in a crumpled state. Hinata rapidly makes circular motions with her hands while emitting chakra from her palms, she then created a dome of razor-sharp chakra needles which then deals multiple hits on one humandrill, taking it out cold.

BREAK OUT!

Despite defeating the group of humandrills, the females had no time to recuperated when another group of the aforementioned creatures made their presence before them, much to their ire and dismay.

"More of them?!" Taki exclaimed in disbelief.

"Damn it!" Sakura cursed, "I wasn't expecting this." she uttered.

"Humandrills comes in large numbers after all." Hinata stated, "Even Zoro-san had trouble dealing with them." she shared.

"Should we take them out as well?" Taki beckoned.

"Letting them all loose will cause troubles to others." Sakura replied, "We had no choice but to fight them." she declared.

Before the two sides could collide with each other, they were interrupted by a voice.

"Need assistance?" the voice mused.

Everyone then turns around to see two figures walking out from the forest next to them.

The first figure is a young man with a tall stature, he had a lanky appearance and a brown complexion, he had dark-brown messy afro-like hair and facial hair, and he had dark-colored eyes. He wears a red short-sleeve happi over a light grey shirt with a stitch pattern running down the middle and ending at the halfway point of the shirt, he wears dark gray hakama cut off at shorts-length which resembles loose-fitting Bermuda shorts and wooden sandals fitted with several metal strips on the soles. He has two blue ring tattoos, two on each wrist and two just above the ankles. Lastly, he carries his sword on his back with a sash that goes from his left shoulder to his right hip with a zig-zag pattern of green and yellowish-brown. This is Mugen.

The second figure is a young man with a tall stature, he had a slim frame and fair complexion, he had a long black hair tied in a loose ponytail with two strands the frame his face, he had dark-colored eyes and wears glasses. He wears a simple indigo blue haori over a white keikogi, black hakama pants and wooden sandals. The haori is adorned with multiple symbols that are four squares in a diamond formation on the right pec, sleeves and back of his haori. This is Jin.

"Mugen-san! Jin-san!" Hinata called out in relief.

"Impeccable timing, guys!" Sakura complimented, "We weren't expecting these many humandrills, so your assistance is appreciated." she admitted.

Jin tips his glasses, "We fought the same creatures on our way here." he shared, "So I'm a little surprised that you girls are dealing with these things as well." he admitted.

"But these creatures are fun to chop down." Mugen admitted with a grin, "I wouldn't mind taking out more of these chums." he added in amusement.

One humandrill frowned at the arrival of Jin and Mugen, the creature then let's out a loud scream and on the process, more humandrills made their presence and joined their brethren.

"You got to be kidding me?!" Sakura exclaimed in disbelief.

"There's more of them!" Hinata shouted in concern.

Jin took a step forward, "Looks like these creatures are deliberately making things hard for us." he commented.

"Then bring it on!" Mugen accepted, "I don't mind a challenge." he admitted with a grin.

And when the five were about to take on the humandrills, a group of lizardmen sprung out from the water, the creatures then let's our a loud screech and pointed their weapons at the heroes.

"What are those things?!" Taki exclaimed in surprise.

"Those are lizardmen." Hinata replied in concern.

Sakura facepalmed in annoyance, "Great! Just great!" she grumbled sarcastically.

Jin sighed in disbelief, "Things just gotten more difficult." he uttered.

"No matter." Mugen dismissed, "I can take them all on!" he declared with a grin.

"Everyone!" a voice called out.

Everyone then turns around to see Kenshin, Sanosuke and Heishiro running towards their direction with Taki gaining a look of surprise when he noticed the bare-chested swordsman.

"Himura-sensei! Sagara-san!" Hinata called out in relief.

"Huh? Who is that guy with them?" Mugen asked in confusion.

"Heishiro Mitsurugi." Taki answered.

"You know that person, Taki-san?" Sakura assumed.

"We came from the same world." Taki answered, "I won't say that we're comrades or anything but I made encounters with that man several times before." she explained.

Jin then looks around and noticed that someone is missing, "Hey? Where is the ninja girl with the scarf?" he asked with a raised eyebrow while referring to Shiina.

On cue, a blue portal materialized out of thin air with Shiina stepping out from it, "Himura-sensei, I'm back." she announced with the portal vanishing from behind.

"Welcome back, Shiina-san." Kenshin greeted, "How are the girls doing?" he asked.

"They're currently resting in a spare room inside the academy." Shiina answered, "I had Granny Smith to look after them." she stated.

Kenshin nodded in response, "Good work." he complimented before turning his attention towards the humandrills and the lizardmen, "Anyway..." he uttered, "... you're just in time to help us take out these creatures." he pointed out, "Shiina, I want you to assist Jin-san and Mugen-san in taking out those lizardmen while the rest of us takes on the humandrills." he instructed.

Shiina nodded her head, "Understood." she uttered before running towards the aforementioned samurais.

"Sanosuke? Heishiro-san?" Kenshin called out, "Shall we?" he beckoned.

Sanosuke smashed his fist together, "Let's go!" he cheered with a grin.

Heishiro smirked, "This is going to be fun." he uttered in amusement.

Get Ready for Battle! No Escape!

"Himura-dono, I noticed that you carry a double-edged sword." Heishiro pointed out, "Why is that?" he asked.

Kenshin chuckled in response, "Because I promised myself that I won't kill anymore." he answered.

"He won't kill humans at least." Sanosuke clarified.

BEGIN!

Kenshin draws his sword and does a rapid flurry of slashes on one humandrill before crouching down before leaping up for an uppercutting slash that launches his target into the air. Sanosuke rushes towards another humandrill and suddenly performs a barrage of punches on his target before finishing it with an uppercut which causes a hard knockback.

"I will give you a taste of true battle!" Heishiro declared.

Heishiro does two thrusts forward before doing a second slash and then pulling his sword back a bit to deliver a downward strike that hits a humandrill overhead. He then charges up his sword before doing a slow but powerful upwards slash that knocks a humandrill into the air, energy then surges through his sword and then goes to deliver a downward slash which sends his opponent bouncing off the ground.

Kenshin draws his sword and took a kendo stance before he dashing towards a humandrill and upon impact, Kenshin simultaneously struck nine points on his opponents body at once before by stopping from behind them and sheathing his sword as his target fell to the ground in a crumpled state. Sanosuke jumps into the air and then lands his fist onto a humandrill's chest before crashing to the ground like a meteorite, he then finished his opponent off by stomping it's head hard.

BREAK OUT!

The scene then transitions to Mugen, Jin and Shiina facing a group of lizardmen.

Get Ready for Battle! No Escape!

"Let's go!" Jin beckoned.

"Hai!" Shiina complied.

"You guys must be a riot in social gatherings." Mugen mused.

BEGIN!

Jin dashes forward and quickly beheaded a lizardman with one slash across it's neck, he then turns his attention towards another lizardman and began unleashing a series of slash towards all over his opponent's body, dismembering the creature as a result. Mugen jumps in the air before stabbing another lizardman on the head, Mugen then did a handstand before spinning around which slashed a group of lizardmen on the process, he then landed neatly on the ground before slicing another lizardman across the chest.

"How shallow-minded." Shiina uttered.

Shiina drops down in front of lizardman and begun stabbing it across the chest with a kunai, she then took a step backwards before throwing several bombs towards her opponent which blasted it off the ground. Shiina then dashes forward and got behind another lizardman before stabbing it on the back and she then finishes it off by setting her opponent on fire with an explosive tag.

Jin and Mugen then charges towards a much larger lizardman and began slashing it with their blades from different directions, Jin then did an upperwards slash while Mugen does a downwards slash to which they cut off their targets arms, the two then ran to different sides before charging back towards their target and then slicing the creature in three parts, killing it.

BREAK OUT!

After defeating every humandrills and lizardmen in sight, everyone decided to take a breather on a large boulder which is set right next to the waterfall.

"Once again, everyone did a fine work in defeating our foes." Kenshin complimented before turning to Taki and Heishiro, "And I would like to thank both Heishiro-san and Taki-san for offering us their assistance in our current mission." he expressed in gratitude.

"I sense great evil behind this situation." Taki shared, "I must vanquished it at all cost." she declared.

Heishiro chuckled in amusement, "You guys really are an interesting bunch." he mused before pointing a finger at Kenshin, Jin and Mugen, "Especially you three." he singled out, "I'm really looking forward taking all three of you in a fight." he expressed with a grin.

Mugen grinned back, "Right back at ya." he replied in glee.

"I wonder how this guy will react once he meets Zoro-san or Kagura-san." Jin thought out loud.

Hinata sighed in response, "He'll definitely challenged them in a sword battle." she concluded.

"I'd like to take him on myself as well." Sanosuke shared with a grin.

"You're going to lose badly." Shiina commented.

"Oi!" Sanosuke exclaimed in annoyance.

Sakura then steps forward, "Himura-sensei, I think we've already cleared this area." she reported, "Should we move on to the next location?" she inquired.

Kenshin nodded in response, "Then we shall." he complied, "And hopefully, we can find more people that are needed to be rescued." he thought out loud with a hopeful expression.

And that's it for the third prologue of the All Worlds Alliance Missions - CROSSOVERDOSE and I hope you all enjoy it.

These are the characters that debuted in this chapter:

Sanosuke Sagara from Rurouni Kenshin

Atra Mixta and Kudelia Aina Bernstein are from Mobile Suit Gundam: Iron-Blooded Orphans

Himeno Awayuki from Pretear

Himeno Kimihara from A Centaur's Life

Heishiro Mitsurugi and Taki are from Soulcalibur

Mugen and Jin are from Samurai Champloo

The next chapter will be the fourth prologue, so please looks forward for it.

Until then paalam!

As Miyuki Shirogane, Kaguya Shinomiya, Chika Fujiwara, Miko Iino and Yuu Ishigami are backed against a wall with Chika being close to hyperventilating, the Choiarks marches forward with the clear intention of harming the five students when they were interrupted by a loud scream.

"WE WON'T LET YOU MOTHERFUCKERS HARM THEM!"

And much to everyone's surprise and shock, Shinpachi Shimura and Nagisa Shirai made their presence by dropping down from above and began attacking and bludgeoning the Choiarks with a sword and a dumbbell respectively.

The five students from Shuchiin Academy could only watch in utter disbelief and bewilderment as Shinpachi and Nagisa beats up their pursuers with one thought in mind.

"Who are these losers?"