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

Number01BlazblueFan - Yes.

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 World

After leaving Lake Touya, we see Amelia Watson, Asuna Yuuki, Calliope Mori, Estellise Sidos Heurassein, Flynn Scifo, Gura Gawr, Heishiro Mitsurugi, Hinata Hyuuga, Ikkaku Madarame, Ina'nis Ninomae, Jin, Kazuto "Kirito" Kirigaya, Kenpachi Zaraki, Kenshin Himura, Kiara Takanashi, Marth, Mugen, Sakura Haruno, Sanosuke Sagara, Shiina, Souji Okita, Taki, Teresa of the Faint Smile, Yumichika Ayasegawa, Yuri Lowell and Yuu Kanda making their way towards the forest of Muramasha.

"So, you plan on challenging every swordsmen in the AWA from the weakest to the strongest, huh?" Kenpachi pointed out.

"Not an idea of mine but I like it nonetheless." Heishiro replied.

"Hmm..." Kenpachi hummed out loud, "... maybe I should do the same thing, too." he considered.

"I'm starting off with this fellow named Shinpachi Shimura." Heishiro shared, "Is the name familiar to you?" he asked.

"Ah, yes..." Kenpachi uttered out loud in confirmation, "... that kid is quite skilled but not that strong." he described, "But I'll admit that he is a good start for a challenge." he admitted.

"Poor, Shinpachi..." Asuna, Estelle, Flynn, Hinata, Jin, Sakura and Yuu thought with a blank looks.

"So, what should we expect in the forest of Muramasha?" Taki inquired.

"We start off by looking around for victims of the bright light." Kenshin replied, "And judging from what I've heard about that forest, many local creatures resides there, so please do look after that at the same time." he stated.

"What kind of creatures?" Marth asked.

Kenshin shook his head, "We had no idea but we believe that it's dangerous." he replied.

Gura then let's out a loud yawn, "I wish I had my phone with me." she uttered out loud, "I wouldn't mind playing some gacha games at times like this." she admitted.

"Me, too." Kiara uttered in agreement, "But we probably lost our phones when the bright light got us." she assumed, "Or we left it behind our office." she added.

"It always ends up with those two possibilities, huh?" Amelia mused.

Suddenly, Mori halted on her track when she suddenly felt a familiar aura, "What the?!" she squawked with wide eyes.

"What's wrong, Mori?" Ina asked in concern.

"I felt a strong familiar aura..." Mori uttered in response when she realized something, "Could it be...?" she assumed before running off.

"Mori!" Ina called out.

"So, I was saying that there was a monkey-" Ikkaku was trying to say something to Mugen when all of a sudden Mori ran past them, "Hey!" the bald-headed shinigami shouted, "Where are you going?!" he demanded.

"Mori said that she felt a strong familiar aura." Ina answered, "Could it be that she felt the presence of one of our friends?" she assumed.

"Guess we'll need to find that out for ourselves." Kirito beckoned, "Follow her, everyone!" he commanded.

After a few minutes of running, everyone arrives in an open area of a blue & black-colored forest with weird-shaped fruits that looks like a bowl of mayonnaise.

"This is the forest of Muramasha?" Yuri questioned in disbelief.

"And what the fuck is the deal with those fruits?!" Mugen pointed out in bewilderment.

"I don't know about you guys but I believe that this place is created for someone like Hijikata-san." Teresa commented.

"If Hijikata-san is here, he'll be over the moon with all mayonnaise around." Souji added.

Kirito looks around and noticed something from a few distance away from them, "Everyone!" he shouted, "Look over there!" he beckoned with a finger pointed at a certain direction.

Everyone then followed where Kirito is pointing and they saw Deidara alongside six figures facing a group of creatures.

The first figure is a young man with a tall stature and a fair complexion, he had a spiky black hair and his eyes is composed of a sharingan and a rinnegan, and half of his face is scarred and part of his left shoulder & wrist is covered in white burn marks. He wears a dark high-collared long-sleeved robe with a white sash and a purple belt wrapped around his midsection alongside the left sleeve torn apart, he wears black pants, white socks and black sandals, and a pair of black gloves. This is Obito Uchiha.

The second figure is a young man with a tall stature and a fair complexion, he had a mousy short red hair and he had a greyish brown-colored eyes. He wears a black high-collared robe with red accents and red & white cloud patterns, black pants, white socks and black sandals. This is Sasori of the Red Sand.

The third figure is a young man with a tall stature, he had muscular frame and a fair complexion, he had a messy brown hair with pointy ends and he had brown-colored eyes. He wears a bluish-purple colored sleeveless gii over a red muscle shirt, bluish-purple colored hakama pants, bluish-purple colored socks wrapped by white bandages all over his calves and the middle of his feet and wears brown slippers. He wears a red colored long scarf, brown bands on each arms, white tapes wrapped around each of his wrist and a loose, metallic belt over a red sash. This is Strider Hiryuu.

The fourth figure is a young man with a slim yet muscular physique, he had a tall stature and a fair complexion. He wears a black headwear with a silver-colored protector and a red long scarf wrapped around his face. He wears a gray faded bodysuit underneath a black armored chestplate with red linings, black pants with an yellow & black octagon-shaped buckled belt wrapped around his waist, black & gray bricked tassets protecting both side of his legs, metallic kneepads over a black shinguards, red socks, armored footwears, arm gauntlets with spikes and red gloves. This is Hotsuma.

The fifth figure is a young woman with slender frame and a fair complexion, she had a neck-length raven-black hair and she had chestnut-colored eyes. She wears a white helmet with three black lines, a red forehead protector and a pair of long white cloths trailing at the back, and she wears a red mask that covers the lower half of her face. She wears a red high-neck detached collar and a pair of shoulder-length gloves with slit sides and spikes, she wears a sleeveless white bodysuit with black & red linings and a small red circle in the middle of her stomach, and had several open parts covered by black fishnets, and she wears a pair of thigh-high armored boots. This is Hibana.

The sixth figure is a young woman with a tall stature, she had fair complexion and a slender frame, she had a waist-length messy & sharp reddish-purple hair tied in low pigtails by black ribbons, she had pointy ears, black & white crystal-like wings and a black & white broken star-like halo on top of her head, and she had heterochromia eyes with her left eye red and right eye blue. She wears a black detached flower-shape collar with a purple brooch-like ribbon tie, she wears an shoulder white lace dress with jagged ends, black frills, black diamond patterns and a black ribbon with a purple brooch-lile button, she wears a black & purple lace belt wrapped around her waist and is held by two red & dark-purple flower ribbons, she wears a black & red frilled skirt with purple ribbons, she wears a dark-purple thigh-high socks with black frills and diamond pattern, she wears a pair of red high-heeled shoes and a pair of white & black detached sleeves with a half puffy shoulders and black diamond patterns. This is IRyS.

And the creatures they're facing are a group of humanoid chimpanzees wearing red-colored ninja garbs with their ears and tails sticking out.

"Look!" Hinata beckoned, "It's Obito-san alongside Deidara-san!" she pointed out.

Sakura facefaulted, "And Sasori-san as well." she added in disbelief.

Heishiro squinted his eyes, "Is that Strider Hiryuu?" he assumed in recognition.

"It's been a while since we last saw him." Taki admitted.

"IRyS is with them as well!" Gura pointed out.

"Thanks goodness!" Ina expressed in relief.

"No wonder the aura I felt earlier is so familiar." Mori uttered out loud, "It belongs to IRys!" she concluded.

"I don't think it's time to feel relief because looks like they're about to fight those things!" Amelia pointed out.

"What are those creatures?" Kiara questioned.

"Looks like an anthropomorphic chimpanzees dressed in ninja attires." Jin described.

"Ninja Chimps?" Ikkaku uttered out loud in disbelief, "Seriously?" he questioned, "The author of this fic must have been a fan of the ninja-monkeys from the other fic." he assumed.

"A subtle inspiration I guess?" Yumichika replied.

"Anyways..." Kenshin interrupted, "... while Obito-san and the others are more than enough to take those creatures down but we'll still aid them, so we can end things faster!" he beckoned.

Sanosuke smashed his fists together, "Then let's do this!" he exclaimed in excitement.

And with that, everyone charges towards the Ninja Chimps and another clash ensues, and at the same time, Gura and the others went to hide behind the large trees.

(Play Naruto Shippuden OST - Angelic Herald of Death)

Hibana charges towards a Ninja Chimp and struck it down with three kicks, a spin slash before ending it with an overhead swing, she then noticed another creatures towards her and she responded by doing an underhand swing which took down her opponent. Hibana then dashes forward and slices three Ninja Chimps on her path before killing another one by performing a spinning attack.

Hotsuma then charges towards a Ninja Chimp and struck it down by stabbing it three times on the chest, slicing it's neck area before ending it with a kick at the back of it's head, he then noticed another creatures towards him and he responded by a downward slash which took down his opponent. Hotsuma then dashes forward and slices three Ninja Chimps on his path before killing another one by tossing a kunai with an explosive tag, blasting the creature into bits.

Hiryuu then dashes up towards a Ninja Chimp before kicking them away, he then runs behind them alongside several slashes that unleashes a shockwave that blows his opponent in the opposite direction. Hiryuu then summons a horde of robotic panthers and eagles which he sneds rushing to attack his opponents whom got mauled as a result, he then teleports above a creature with three afterimages above him before sending the afterimages to dive-kick his target from above.

Sasori then grabs a Ninja Chimp and has the Third Kazekage's left arm open up, summoning hundreds of other arms from it to grab the opponent with the hands pulling the opponent in close as the Third Kazekage slashes them with a buzzsaw. Sasori then summons two blocks of Iron Sand and merges them together, creating hundreds of branching spikes of Iron Sand that rains down across the field and impaling several Ninja Chimps.

Deidara sends three clay birds towards a group of Ninja Chimps and upon contact, the birds suddenly exploded which blasted the creatures to pieces. Deidara then got in front of one Ninja Chimp and unleashes it with a series of explosions which sent the creature flying above, he then quickly got above the creature before kicking it down to the ground. He then noticed a group of Ninja Chimps dashing towards him, so he responded by unleashing waves upon waves of clay spiders which then exploded upon getting close to the creatures, blasting them off on the process.

Obito then grabs a Ninja Chimp and swings a gunbai at them while wrapping his foe in a vortex of wind, he then teleports into the air using Kamui and breathes a stream of fire down at the opponent, setting the vortex ablaze to scorch them and blows them away. Obito then shoots out a stream of fire and distorts the flames using Kamui which created a fiery spiral that flies forward and hits a group of creatures multiple times.

Ikkaku grabs a Ninja Chimp and stabs at their head with Hozukimaru but only for the foe to dodge by moving their head to the side, he then smirks as Hozukimaru splits apart with its chains wrapping around the foe's neck as the blade comes around and slashes them across the chest. Ikkaku then splits Hozukimaru apart before repeatedly swinging it at the opponent to slash at them from a distance and ending by spinning its blade around by the chain and leaping at the foe for a falling slash.

Yumichika holds up Fuji Kujaku and makes feathers appear around him which then damages a group of Ninja Chimps, he then proceeds to do a 4-hit slashing attack at one Ninja Chimp, slicing it to pieces on the process. Yumichika then extends Fuji Kujaku and does an uppercut on one creature before sending out a horizontal vortex of feathers that damage another opponent.

Kenpachi grabs a Ninja Chimp and runs his Zanpakuto through their chest before lifting them into the air and swinging his sword to fling them off the blade, he then grips Nozarashi with both hands and does a downward slash while firing off a shockwave of spirit energy which blasted a group of creatures. Kenpachi then lunges another Ninja Chimp while doing a barrage of slashes with Nozarashi, ending with an outward slash that knocks his foe backwards.

Yuu swung his sword and releases a small swarm of supernatural creatures towards the Ninja Chimps which began to devour the latter, Yuu then charges towards another Ninja Chimp and slashed it eight times, killing it on the process. Then three Ninja Chimps jumps over him but Yuu responded by slashing his blade in a circular motions and struck all of them dead.

Asuna grabs a Ninja Chimp before stabbing them four times at high speeds and then knocks them away with a bash to the face from her rapier's hilt. Asuna then rushes towards another creature and hits them with a fierce barrage of stabs from her rapier, she then lunges upward while stabbing with her rapier before rushing downwards for a diving stab, killing another creature.

Kirito grabs a Ninja Chimp before lifting into the air while pulling back his hand and then jabbing it into their shoulder. Kirito then dashes forward and does a four-hit combo of slashes in the shape of a square towards a group of Ninja Chimps, he then rises into the air while spinning and slashing before descending downward for a falling slash from both blades, blasting another group of creatures off the ground.

Teresa kicks a Ninja Chimp into the air while tossing two daggers at them and then jumping into the air after them before sending them into the ground with a downward sword slash. Teresa then sheathes and draws her sword at high speeds while unleashing a fierce barrage of slashes on her opponent before finishing them off with a sword stab on the face.

Souji charges and attacked a group of Ninja Chimp by slashing one upwards, slashing another one downwards, jabbing a third one with the hilt of his blade and finishing the last one by slashing it twice on the chest. Souji then grabs a Ninja Chimp before slashing them three times across the chest and then kicking them away.

Marth grabs a Ninja Chimp while beating them with his sword's hilt and then slashing them across the chest before kicking them away, he then dodges a strike from another creature and he responded by doing a five-hit combo of slashes which took out his opponent. Marth then raises the Falchion to the sky before rushing at another Ninja Chimp for a forward thrust before following up with an arcing slash, taking out his target.

Estelle charges forward and knocks a Ninja Chimp into the air with her shield before thrusting it diagonally into them, she then rapidly thrusts at the enemy and then slamming into them with her shield. Estelle took a step back before performing a charging thrust and hits one Ninja Chimp, she then spins around and strikes low with a rainbow-colored attack, knocking down enemies and forcing downed enemies to stand.

Flynn attacks a Ninja Chimp with his sword before casting a blue glyph beneath the target and then summoning a pillar of light to strike them, he then struck the ground with his weapon while sending a powerful blast of energy upward which blasted away a group of creatures. Flynn then dashes through another creature before assaulting them with a glyph of glowing energy that lifts them into the air, blasting them on the process.

Yuri grabs a Ninja Chimp while repeatedly punching them in the gut and then ending by knocking them back with a punch to the face. Yuri slashes upward while ending a wave of blue wind at his targets and at the same time, he fires off two Azure Edge projectiles which blasted his targets on the process. Yuri then dashes forward a short distance while phasing through enemies and their attacks in the process, he then follow up by slashing the foe across the back, leaving them crumpled.

Taki kicks one Ninja Chimp down before performing a magical ninja spell in order to triple herself into three. Afterwards, her three selves 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.

Shiina drops down in front of Ninja Chimp 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 Ninja Chimp before stabbing it on the back and she then finishes it off by setting her opponent on fire with an explosive tag.

Jin dashes forward and quickly beheaded a Ninja Chimp with one slash across it's neck, he then turns his attention towards another Crab Knight 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 Crab Knight on the head, he then did a handstand before spinning around which slashed a group of Ninja Chimp on the process, he then landed neatly on the ground before slicing another Ninja Chimp across the chest.

Sakura charges towards a group of Ninja Chimps, "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 Ninja Chimp right on the chest area and the impact is so strong, the creature is send crashing to a rock.

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 Ninja Chimp overhead. He then charges up his sword before doing a slow but powerful upwards slash that knocks a Ninja Chimp 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 Ninja Chimp and upon impact, he 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 Ninja Chimp's chest before crashing to the ground like a meteorite, he then finished his opponent off by stomping it's head hard.

BREAK OUT!

"GIRLS!" IRyS cried out in joy and relief.

After defeating every Ninja Chimps in sight, everyone decided to gather around underneath a large tree where IRyS reunited with her fellow Hololive members while the rest introduced themselves to each other.

Yuu, Ikkaku and Yumichika are seen checking the mayonnaise-bowl fruits in utter disbelief and bewilderment.

"These things are actually fruits?" Yuu commented with a perplexed expression.

"Jesus Christ." Yumichika cursed, "We better not tell Hijikata-san about this." he beckoned.

"Yeah." Ikkaku uttered in agreement.

With Amelia, Calliope, Gura, Ina'nis Ninomae, IRyS and Kiara...

"GIIIRRRLLS!" IRyS cried out in joy while hugging Gura at the same time, "Aym shooo hapi tu shee yu all!" she wailed out.

"Urk!" Gura grunted in response but kept her smile, "The feelings the same, IRyS." she replied.

"I'm shooo..." IRyS wheezed, "I'm shoo..." she pressed on, "... been worried abawt yu all!" she sobbed loudly.

"Deep breaths, IRyS." Amelia advised, "Deep breaths." she advised.

"Yeah." Kiara uttered in agreement, "You might end up crying to death." she said with a blank look.

With Heishiro, Hibana, Hiryuu, Hotsuma and Taki...

Hiryuu crossed his arms, "It's been a while since I've last seen the two of you." he admitted.

Heishiro chuckled in response, "Likewise." he replied in agreement, "Looks like you've been doing well." he pointed out.

"Still busy with your duties as a Strider?" Taki assumed.

"Pretty much." Hiryuu confirmed, "I was on my way back home after finishing a mission when a bright light caught onto me and brought me to this world." he explained, "I came across Hotsuma-san and Hibana-san along the way before meeting up with Obito-san's group and Miss IRyS." he concluded.

"Hibana and I were also on our way back home after concluding our respective missions when we found ourselves lost in this world." Hotsuma shared.

Hibana clicked her tongue, "Just what the heck is going on?" she uttered in frustration.

"We've been asking the same question ever since." Taki replied.

With Deidara, Hinata, Sakura and Sasori...

"I'm surprised to see you here without your usual partner, Deidara-san." Sakura admitted.

"Yeah, Damascus is busy with something else, so I'm stuck with my old partner for now." Deidara explained while jabbing a thumb at Sasori.

"Don't jab your thumb at me." Sasori chastised.

"Is the rest of the Akatsuki members in this area as well?" Hinata inquired.

"No, it's just the two of us." Sasori answered.

"Anyway..." Sakura uttered, "... I hope that the two of you would continue on to behave well in this operation and don't start arguing which of your art is better." she reminded.

"No promises." Deidara and Sasori answered at the same time.

With Kenshin and Obito...

"It was quite a pleasant surprise coming across your group in this part of the world." Kenshin admitted, "I'm pretty sure that you were in another region." he recalled.

"I've been informed of a change of location at the last minute." Obito replied, "Anyways..." he trailed, "... I'm very grateful for your group aiding us at the right time." he expressed in gratitude.

"It's no pleasure." Kenshin reassured, "Though I had to admit that I'm surprised that you encountered such creatures." he admitted.

Obito frowned in response, "Unfortunately..." he trailed, "... that wasn't just a mere encounter." he said, "Those creatures were sent towards us." he revealed.

This taken Kenshin aback, "What do you mean?" he asked in surprise.

"I've spoke to several locals earlier ago and told me that the Ninja Chimps are known as 'Sarunobi', and these creatures most of the time doesn't act on their own accordance." Obito explained, "The only time these creatures will attack when they are either provoked or someone ordering them to do so." he listed off.

"You mean...?" Kenshin trailed in assumption.

"Someone sent those creatures after us." Obito revealed.

"Do you think it's the work of the Apostles?" Kenshin assumed.

"Pretty much." Obito confirmed, "And I'm positive that they're still in this world." he declared.

As this is going on, we see two pair of figures observing everyone from a far, the two figures then immediately vanished without a trace.

And that's it for the 28th chapter of the All Worlds Alliance Missions - CROSSOVERDOSE, and I hope you all enjoy it!

These are the characters that debuted in this chapter:

Hibana from Nightshade

Hotsuma from Shinobi

IRyS from Hololive

Obito Uchiha and Sasori are from Naruto

Strider Hiryuu from Strider

The next chapter will continue the rest of the storyline, so please look forward for it.

Inside a maze-like dungeon, we see Aoba Suzukaze, Hajime Shinoda, Hifumi Takimoto, Kou Yagami, Nene Sakura, Rin Tooyama, Shizuku Hazuki, Umiko Ahagon and Yun Iijima running for their lives while being chased by an unseen creature from afar which fortunately for them is pretty slow.

"Run, everyone!" Aoba beckoned, "RUN!" she shouted even louder.

"I am running!" Nene shouted back.

"Why is that thing chasing after us?!" Yun questioned in panic.

"We've trespassed this dungeon!" Hajime replied, "Of course it's gonna chase after us!" she exclaimed.

"Just keep on running!" Kou admonished.

The group then made a turn in one corner but only to come across a wall.

"Dead end!" Umiko exclaimed in disbelief.

"How cliche." Shizuku commented rather nonchalantly.

"Quick!" Rin beckoned, "Let's turn around and run to the other side before that thing..." she was trying to say when she heard loud footsteps from behind, "... catches up to us." she concluded with a nervous expression.

Everyone then slowly turns around to see an 8-foot tall humanoid gorilla glaring down at them and the creature is sporting a pair of golden-colored revolver-like hands.

Hajime chuckled nervously, "Hello..." she greeted with an anxious grin.

The humanoid gorilla then responded by aiming it's revolver-hands at them, revving it up rather madly.

"Uh-oh..." Hifumi uttered in dread.