Author's Notes:

I know that I'm a bit overconfident at this, but I need to take a short break from writing mostly the Septem Singularity crossover. And I need write another story for now as well as to celebrate the Shaman King Reboot. Anyway, this is the new OVA series now called "The Rise of Heroes and Spirits". From which Usagi, Yusuke, Yugi, Ichigo, Yoh and others work together to protect Japan and the world against any threats.

If you are wondering what timeline the series are here it goes:

Sailor Moon: After Manga Ending but before Usagi and Mamoru's wedding.

Yu Yu Hakusho: After Series Ending

Yu Gi Oh: After Duel Monsters, GX, 5D's, Zexal and Arc V Ending

Bleach: After Series Ending

Shaman King: After Hao's Manga Defeat but before Hana's birth

Well in this first Arc, the five groups first meet when they are just shopping in the same district. Only to find out about an ancient conspiracy concerning a group of manslayers targeting the descendants of "The three Unifiers of Japan". With the three descendants manifesting spiritual powers from which the heroes then help manifest against the Manslayers.

Disclaimer: I don't own any of the characters of the Manga and Anime Series, that are appearing in this in this Fanfiction. They belong to their respective creators: Naoko Takeuchi, Yoshihiro Togashi, Tite Kubo, Hiroyuki Takei and Kazuki Takahashi. The OC Characters belong to me.

OVA 1

The Crimson Blade strikes part I

Usagi POV

In the Tokyo metropolitan area

Present day

It was just a normal in the Japanese capital of Tokyo, as we shifted to the Azabu Juban district. We saw a blonde-haired blue eyed Odango haired girl wearing a sailor uniform walking alongside a black-haired man wearing a black tuxedo. They alongside another group of girls also wearing Sailor Uniforms. With them having black, blue, blonde, and brown hair as well as blue, green and purple eyes. These are Usagi Tsukino, his boyfriend Mamoru Chiba and her friends Rei Hino, Ami Mizuno, Makoto Kino and Minako Aino. Secretly they are part of a Superhero group called the Sailor Senshi. They face many great threats from Queen Beryl to Sailor Galaxia. Currently they are now going for walk.

"Hey Mamo… Man it's been a long time since we have been fighting evil huh?"

"I know, we have been living peacefully since then, but still we have been hearing a lot of rumors lately."

"Yeah, like Men with black kimonos and swords, Kaiba Corporation Conspiracies with the Duel Monsters as well as those Shamans and some strange bunch calling themselves Spirit Detectives." Rei agreed.

"Well, we don't need to worry about it now. All we have to do is relax." Minako said assuring Usagi.

"Well let's get going then!" Makoto shouted.

"Makoto..." Ami muttered as the others are smiling and giggling, as they continue to walk, Rei suddenly has a headache as she suddenly saw four swordsmen facing Rei and her friends with them being accompanied by four more other groups.

"Rei-chan, are you okay?" Usagi asked.

"It's nothing…" Rei then muttered to herself, "What was that? Was that a premonition? And who are those people?"

Yoh POV

Meanwhile, in Funbari Onsen outside the city limits of Tokyo near Saitama

Present day

As we go to an inn outside city limits, we saw a young man with brown hair and eyes and wearing a white jacket and claw necklace. Being lectured by a girl with medium length blond hair, amber eyes, a red bandana on her head black top, blue beads on her neck and sandals. These two are Yoh Asakura and Anna Kyoyama a Shaman and an Itako. Years ago, they and their companions help stop Yoh's twin brother/Ancestor Hao Asakura the current Shaman King by having him face and reconcile with his dead mother Asanoha Douji with the latter reprimanding him for trying to eradicate humanity.

"Look, Anna please don't be like that. It's not as if Hao is going to change his mind."

"Yoh look I don't care if Hao change his mind or if his mom is still with him, you need to become Shaman King as you promise me okay?"

"Yeah, yeah, okay. By the way, you're pregnant right? So, what name we will be choosing."

"I don't know but I was thinking of naming him Hana."

As they continue to talk, they are being onlooked by a group of people consisting of a short man with amber bob cut hair and a student uniform, a Chinese kid with purple hair, yellow eyes and is wearing a yellow school uniform, a boy with blue hair and a tribal bandana and white jacket, an African American kid with curly hair wearing white clothes while the other three as a British green haired kid, a pink haired mink girl and a black pompadoured hair delinquent. With a bunch of spirits consisting of two samurai, a Chinese soldier, as well as a cheetah, a fairy, a gold Olmec statue, and a little girl. These are Manta, Ren, Horohoro, Chocolove, Tamao, as for the ghosts their names are Amidamaru, Tokagero, Bason, Morphine, Kororo, Mic, and Pascal.

"Wow Yoh-kun is getting a mouthful." Manta said.

"Well, can't say I blame her. We forfeited the Shaman Fight. And we let Hao be the winner and the new Shaman King." Ren said.

"And we make a promise with him." Tamao agreed.

"Yeah…"

Anna then sighed, "Fine, but Yoh can you at last accompany me?"

"For what?"

"I need to go shopping. And I need you guys with me."

"EHHHHHH!"

"Geez… she is still as demanding as ever." Manta muttered.

Ichigo POV

Elsewhere on the Kurosaki Clinic, Karakura City, Near Tokyo

Present Day

Inside a certain clinic an orange-haired man was now meeting with another orange haired girl, boy, a black-haired girl, red-haired man, and girl as well as a blue haired man with glasses and a Mexican Japanese man. These are Ichigo Kurosaki, Orihime Inoue Kazui Kurosaki, Rukia Kuchiki, Renji Abarai, Ichika Abarai, Uryu Ishida and Yasutora Sado they are a group consisting of two, humans, a Quincy and three Shinigami, during the Quincy Blood War they work together to stop Quincy Ancestor Yhwach from taking over the world.

"Yeesh, being a Captain must have been hard Rukia?"

"Don't even start…"

"Well, we're going out. But what are we going with the kids?" Orihime asked.

"About that I made some calls and besides, they can handle themselves." Uryu answered.

Well, then let's get going then."

Yugi POV

In a city called Domino City, on the outskirts of Tokyo

As we go to Domino City, we saw a group of young adults are now walking with them consisting of a man with a strange hairstyle consisting of blonde locks and black hair, a girl with short brown hair, boy with pointy brown hair, a man with short amber hair, a man with long white hair. These are Yugi Muto and his friends, Tea Gardner, Tristan Taylor, Joey Wheeler and Ryo Bakura. They are known as Duelists, players who play the Duel Monsters card game. They currently are now recently meeting another group of Duelists as they deal with the fallout of with their battle against a dangerous individual named Aigami AKA Diva.

"Are you sure he is as good as you say, Yugi?" Tea asked.

"Yeah, I gave him the Winged Kuriboh, remember?"

"Well… As long as you say that he is a good guy." Joey smiled.

"By the way how's Kaiba?" Tristan asked.

"Well after his fight with the Pharaoh, he is currently managing the Duel Academy alongside Pegasus."

Joey sighed, "Yeesh, this is just annoying, Kaiba really needs to have a life."

"I agree." Bakura agreed with Joey.

As they continue to walk, they then heard someone called out, "Hey Yugi!" They then saw another group of people with red, blue, black, and white uniforms. They consist of four boys and one girl the boys had brown, azure, black and white hair, while the girl has long brown hair. These are Jaden Yuki, Syrus Truesdale, Aster Phoenix, Chazz Princeton and Alexis Rhodes.

"Jaden!"

"Hey long time no see, huh!?" Jaden replied. As the two groups greeted each other.

Meanwhile, back in Tokyo on the Akihabara district

Present Day

And lastly, we come into a group of four men and three women with the men having black, orange, and red hair, with the three of them have black hair with one being slicked while the other was spiky with a headband on, while the orange head is styled in a pompadour. As for the girls one has light blue hair styled in a ponytail and was wearing a brown jacket and blue pants, the second was a girl with short brown hair wearing a red jacket and the last has lime green hair and wearing a kimono. These are Yusuke Urameshi and the Spirit Detectives consisting of Kuwabara, Kurama, and Hiei with the girls being Botan, Keiko and Yukina.

They are now fresh off their ordeals from the Spirit World and Demon World, with them having some quality time together. With Yusuke muttering, "Boy this is refreshing."

"Tell me about it. After the whole Enma debacle we need some time out." Botan replied.

"I know right?" Kuwabara said.

As they continue to walk, they didn't notice three teenagers walking that would change the five groups lives forever. Two of them were boys and on was a girl, their clothes donned with the crest of the Oda, Toyotomi and Tokugawa clan. The boys have the Oda and Toyotomi crest have purple and crimson hair, while the girl has the Tokugawa crest have golden hair.

"Hey Touma Oda! Are you sure this is a great idea?" the girl shouted.

"Well excuse me Hina-sama! It's not like we're going to be lectured." The redhead replied.

"Guys, guys now's not the time, we need to be on the same page here!"

"NOT NOW! TSURUGI!"

Meanwhile, Sailor Senshi continues to walk, they pass by the Spirit Detectives. With Rei freezing, Usagi then asked Rei, "What's wrong, Rei-chan?"

"Nothing."

3rd POV

A few minutes later

Rei then asked the others, to leave her alone for a little while, as she tracks down the presence. She then meets Hiei who also separated from the group. When he was getting tired of the antics of the others. They are now in tense position. With Rei bringing out her ofudas, and Hiei holding his sheathe sword.

"Okay, who are you? I sense Demonic Ki in you!" She then pulled out her ofuda.

Hiei then starts to try and run away, only for Rei to try and follow him. However, the former unleashes a burst of black flames. Rei then transforms into Super Sailor Mars which has her wearing a Sailor Uniform with red colors and dodged it.

She then shoots a snake-shaped fire while shouting, "MARS SNAKE FIRE! (蛇火炎 (マーズ・スネイク・ファイア)"

The attack then heads towards Hiei who then countered it with another black fire. He then disappeared into thin air. Much to Mars' confusion

"Who is he?"

On the other side of the district

Meanwhile we then saw Yoh's group walking as Anna was now saying, "Come on we don't have time!"

"Yeesh… Anna stop being such a slavedriver." Yoh said.

After a few minutes of walking, Yoh's group then suddenly bump into another group. With Horohoro saying, "Hey! Watch where you going?" They then saw that it was Ichigo's group.

"Oh, sorry about that?" Ichigo replied.

Anna then said, "Stand back everyone!"

"Ichigo you too." Rukia said.

"What is it Anna?"

"Is there a problem Rukia?"

"You… You are a ghost, right? Or should I say a 'Shinigami!'" Anna said to Rukia who was shocked at this.

"How did you?"

"It's easy for us Shamans."

This caused Rukia and Renji to widen their eyes, "Impossible."

As the tensions rise another voice called out, "Hey! What's going on here?"

It was none other than Yugi and Jaden's voice. This caused everyone else to recognize the two.

"You're Yugi Muto and Jaden Yuki!" Hohoro and Manta shouted.

"Glad you have heard of us. But now's not the time?"

Orihime and Tamao then join them, "Yes they got a point."

But before things get worst someone intervenes, "Hello can I speak with you Anna Kyoyama?"

Anna then turns to the direction of the voice, "Who goes there?" They saw that it was three women with Sailor Uniforms one had long greened hair, one with short ashen hair, one with long turquoise and the last had purple black hair holding a glaive. It is none other than Sailors Pluto, Uranus, Neptune, and Saturn.

"Wait, you're the…"

"Yes, we're the Sailor Senshi. And we need your help." Pluto said.

Ichigo, Yugi and Yoh then asked, "Why what's the problem?"

"Because we have received visions from the spirits of Nobunaga, Hideyoshi, and Ieyasu. And we were visited by Kisuke Urahara, Seto Kaiba and the Shaman King, Hao Asakura."

This caused the other groups to shout "EHHHHHHH"

Hina POV

A few hours later

As the three kids continue to walk, they are unaware that a group of cloaked assassins are observing them. With the one at the center saying, "Everyone it's time!"

As the five groups are now at the same district, as they continue to interact. However, as they are about to leave Rei, Anna, Ichigo, Hiei and Jaden then sensed something wrong.

"What the hell is that?"

They then heard an explosion, with Ichigo seeing the three kids running from one of the assassins with Hina shouting, "who are you?"

One of the cloaked men grinned, "Well, you will about find about that in the afterlife!"

As the three are about to close their eyes, they then heard a clanging sound. There they saw Ichigo with a black kimono and two large knives who then asked, "What the fuck are you doing?"

"Who are you?" Tsurugi asked.

"You three can see me? Whatever go now!" Ichigo shouted as he fights the Assassin with Ichigo's companions helping him.

The three then nodded as they continue to run, they saw another Assassin. This one female, "You're not getting away that easily!" However, as she was about to attack the Sailor Senshi and the Spirit Detectives intercepted her and her minions with Sailor Moon, Sailor Venus, Yusuke and Kurama punching her in the face.

"Woah you got spunk there! You must be Sailor Moon?"

"Yeah, and judging from the way you fight you two and your friends must be a Spirit Detective?"

"Be careful Yusuke!" Keiko shouted.

Super Sailor Mars and Hiei who were reluctantly working with each other then went towards the kids with Mars asking, "Are you okay?"

"Yeah." Hina replied.

"Does that answer your question?" Hiei asked, much to Mars annoyance.

However, the assassin then tried to surprise attack them, when the Outer Senshi suddenly appeared alongside Yoh's group with Mercury saying, "Haruka-san, Michiru-san, Hotaru-chan, Setsuna-san. But who are those people?"

"Just some allies." Pluto answered.

"We came here because they ask us too." Anna said.

However, as one Assassin was about to attack Mercury Horohoro rams him with his snowboard.

"Thanks."

"Oh, no sweat."

The Duelists were seeing all of this, with Yugi muttering, "If only we can help them."

"Yeah, I agree with that Yugi?" As they saw Touma about to be killed, Jaden uses his powers to have his and the other Duelists to then have their Ace Monsters come out suddenly from out of nowhere. They then started to help the others. However, as the Assassins are about to kill the three. Hina, Touma and Tsurugi then started to glow.

The heroes were now curious about this, when they heard a voice called out, "My you three are really getting to be a handful."

Hina, Touma and Tsurugi are now also confused at this, they then saw three men going down, with them resembling the Samurai Warriors version of Oda Nobunaga, Toyotomi Hideyoshi and Tokugawa Ieyasu. Who were then holding out their weapons. Which was a katana, a spear and two katanas.

"Are those our ancestors?" Tsurugi asked.

Saturn then shouted, "YOU THREE TAKE THEIR WEAPONS NOW!"

"But we don't know?"

"Just do it!" Mars said.

They then grab the weapons and started to fight the Assassins, with the three emitting Reiryoku, Reiki and Furyoku. Which surprises the Detectives, Shamans and Ichigo's group.

With the cloaked Assassins backed in a corner, the leader then ordered, "Everyone! This is getting bad. We must retreat!"

"Hey! Where are you guys going?" Jaden and Ren shouted.

"We realize that you are too much for us." The leader loosens his cloak which revealed crimson hair and flaming eyes, "But next time we will have the heads of the descendants!" They then disappear out of thin air.

"Well, we won't let that happened." Sailor Moon muttered. She then turns towards the other groups, "Hey I have to admit you are not half-bad."

"Yeah…" Yoh, Yusuke, Ichigo and Yugi replied uneasily.

As they talk, they heard a group of samurai and servants with the Oda, Toyotomi and Tokugawa crest. Coming towards them with one of them saying, "Milady! Touma-sama! Tsurugi-sama! Are you okay?"

Hina answered, "Yeah! And it's all thanks to them."

"Thank you, for helping Milady here!"

"Yeah, no problem but we need to have a place to rest and discussed the problem." Sailor Mercury said.

Hina then replied, "We can go to my house if you like."

"Okay then let's go!"

3rd POV

In the Tokugawa manor, Tokyo

Present day

The group then started to introduce themselves with each other, with Koenma a young brown head man with a pacifier, the black and white Moon cats Luna and Artemis, Seto Kaiba who has brown hair and white jacket and Kisuke Urahara a former Shinigami member of Soul Society wearing a green hat, ashen hair and black clothes entering the scene. With Koenma saying that it was a long time since he saw Shamans, Serenity's daughter, and Shinigami together. Much to the shock of Anna and Rukia, who then asks how he does he know the Sailor Senshi, the Shinigamis and the Shamans. He then revealed his identity much to their shock especially the Shamans and Ichigo's group, due to the fact that Koenma is Enma's son and that the Spirit World had close ties with Soul Society and the Patch Tribe with Koenma having been an acquaintance with Hao Asakura during his reincarnations. Pluto and Tea then ask Koenma. On whom are those Assassin and what to do.

Koenma then answered that the ones who attacked them are the 'The four Crimson Manslayers', a group of renegade Manslayers that Tokugawa Ieyasu exiled for being too vicious and genocidal as well as dabbling in the dark arts of Onmyoudou as well as other magics. Kisuke then proposes for the three to train with him, Yusuke, Rei, and Anna. From which they accept.

Unknown POV

Unknown Place

Present day

As we go to an unknown place, we saw the cloaked Manslayers sitting at the table, "Well that was a failure. Shinku-sama" The female manslayer whose appearance is that of a female with yellow kimono and red hair said.

"I agree didn't expect the Moon Princess, the next head of the Asakura family, those Soul Society dogs, the Spirit Detectives and the King of Games to work together, Akagi." The leader Shinku agreed.

"But we can't just give up now! We need to get revenge against the Tokugawa Family now!" The large redhead man shouted.

"Benimaru… you'll break the table calm down." The teenage redhead said.

"You don't have to tell me, Guren!" Benimaru shouted.

"Okay, calm down let's proceed to plan B." Akagi said.

Author's Notes:

And that's about it. Jeez this was exhausting hope you enjoy this.