History
Early Life
Hayate is the eldest child and only son of Shiden, the now-former leader of the Mugen Tenshin Clan, and Ayame. He was born to be the next leader of the clan, to follow on from his father. He seemed to have a happy childhood, training in the art of the clan, Tenjinmon-styled ninjutsu, with his younger sister Kasumi, who loved him dearly. After Genra requested to Shiden for Ayane - the village's "cursed child" and his foster daughter - to begin her training, Hayate started to form a friendship with the girl, treating her with kindness, which most of the clan didn't give her. The two formed a strong bond, but soon after, Ayame admitted to Ayane that she was her daughter, meaning that she was a half-sister to Hayate and Kasumi. Despite this life-changing revelation, and the falling-out between Ayane and Kasumi, Hayate reminded to have strong relationships with both of his sisters over the years. During his early life, Hayate also became good friends with Ryu Hayabusa, who like him was next in line to be the master of his own clan, the Hayabusa Clan.
Raidou's Attack and the Aftermath
When Hayate was 23, Raidou, Shiden's traitorous brother who was banished from the clan, returned to their village and attacked the clan in an attempt to "steal" the Torn Sky Blast ninpō attack. Hayate and Ayane were at the front line to defend the village. Ayane attacked Raidou to defend her brother, but was quickly defeated. Hayate ran to her aid, but when Raidou called him a "weakling" for hiding behind a woman, Hayate attacked him in rage. He used the Torn Sky Blast to fight Raidou, despite Ayane's protests, but he was overcome by his uncle's superior fighting skill, and the Torn Sky Blast was stolen from him. As both of their ninpō attacks collided, the resulting explosion threw Hayate into a tree, cracking his spine and sending him into a near-fatal coma. Despite Kasumi dutifully looking after him, Hayate's remained in his coma and seemed doomed to stay in that state, with some of the shinobi considering him to be "dead". Because of this, his entitlement to the title of clan master was passed down to Kasumi. Soon after Kasumi learned the truth about the cause of Hayate's coma from Ayane, she fled the village to seek revenge against Raidou for Hayate during the first Dead or Alive World Combat Championship, despite the fact that leaving the village without permission branded her as a runaway shinobi.
Project Epsilon, Ein, and the Second DOA Tournament
Shortly after the events of the first tournament, Hayate - still in his coma - was kidnapped by Kasumi α, a science product and clone of Kasumi of and for the Dead or Alive Tournament Executive Committee and was taken to DOATEC Germany, one of their research labs located near the Black Forest. While in their possession, Hayate became the sole subject for Project Epsilon, created by Victor Donovan and headed by Lisa Hamilton, and was made to undergo various experiments as part of the project. DOATEC planned to create the perfect superhuman weapon by reconstructing Hayate, just as they were using Kasumi's DNA around the time for the same purpose. Hayate was kept at DOATEC Germany and, using the experiments to enhance his body's nervous system, the project team managed to repair his spine and bring him out of his death-like coma (which he entered after being seriously injured by Raidou), but did little else to him at the time. Shortly before the second tournament began, Ryu Hayabusa attacked DOATEC Germany to save Kasumi (who was also being held in the same building) and caused the building to set alight. The DOATEC staff, along with Hayate and Lisa, were taken onto helicopters to escape the blaze and continue their experiments at another DOATEC lab, but the helicopter Hayate and Lisa were on suffered engine failure and crash-landed in the Black Forest. Although wounded, Hayate got away from Lisa (who purposefully allowed his escape, since he was considered a ‘failed experiment’ and she was morally conflicted over the event) and the crash alive and ran into the forest. There he was lucky enough to stumble into a clearing and run into Hitomi, a Karate student who was training in the forest, mistaking her as Kasumi before collapsing. Due to the traumatic events he went through, Hayate began to suffer from extreme amnesia, and he could not remember his past or even his own name. He was taken in by Hitomi's family, and ended up going by the name of "Ein". While he was staying with Hitomi and her father, Ein worked in the family's dojo. With training from Hitomi’s father, Ein mastered the art of karate in a short period of time and was made an instructor in the dojo. However, wanting to find out who he was and where he came from, Ein left to join the second tournament on a journey of self-discovery and find answers to his lost past. During the early rounds in the tournament, Ein encountered Hayabusa and Ayane, who both wondered if he is really Hayate and Helena Douglas, who talked about the failed Project Epsilon, which confused Ein. In his match with Hayabusa, he was defeated by the super ninja, which caused Ein to regain some memories about him. Sometime after the second tournament, Ein finally met up with Kasumi, whom he still didn't remember. Hayabusa encouraged them to fight, saying that when the blood of two siblings meet in battle, the very soul of a shinobi will awaken, and the siblings battled each other. Sure enough, after he defeated Kasumi and knocked her unconscious, Hayate's memories returned and he finally remembered who he was. Shortly afterwards, Genra appeared before them and revealed himself to be the one who broke the barrier that separates the Spirit World from Earth, allowing Bankotsubo to enter the human world and cause chaos. As the traitorous ninja made his leave, Hayate and Hayabusa confronted Ayane, who was under Genra's control, and Kasumi α, Kasumi's clone. Together with Hayabusa, they were victorious. After the fight, Hayabusa introduced Hayate to his friend, CIA agent Irene Lew who tells the men that the CIA have been watching DOATEC and their shady actions for some time. After Ayane regained consciousness, they soon realized that Kasumi disappeared, leaving Hayate in a highly worried state.
The Third DOA Tournament
After Genra turned against the clan, Hayate requested his father to allow him to hunt down the traitor, which made Shiden believe that Hayate may be ready to take over as the leader of the clan. Hayate wanted to find Kasumi first, but Ayane spoke against it, calling Kasumi a traitor and suggesting that she might have been consorting with Genra. Enraged by her words, Hayate slapped Ayane. Shiden rebuked the two for quarrelling, and dismissed Ayane, while asking Hayate to train with him, although Hayate didn't understand why. On a moonlit night at the Azuchi, Hayabusa tells Hayate that he was no match for the Jonin who once headed the Hajinmon. Hayate retorts that Hayabusa knew nothing about Genra, and challenged him to prove he could beat someone if he had to. He defeated Hayabusa, only to discover it was a fake copy Hayabusa had created using the substitution technique. Bewildered at first, Hayabusa told Hayate that they'd meet again in the upcoming third DOA tournament. Getting a lead on Kasumi's whereabouts in Kyoto, Hayate and Ayane join the third tournament. While on the
Freedom Survivor, a private luxury cruise ship, Hayate disguised his identity by assuming his former amnesia identity, Ein. There Hayate met up Hitomi again for the first time since he left her family's home when he was Ein. Hayate introduced Ayane to Hitomi, who assumed that Ayane was Kasumi, the girl who Hayate was mumbling about when they first met. Angered for being mistaken for Kasumi, Ayane fought Hitomi. After the fight, Hayate revealed to Hitomi the truth about his shinobi identity before parting ways again, much to her surprise. Later, the siblings also crossed paths with the legendary Gen Fu, and his student Eliot. Hayate paid respect to Gen Fu's skills and reputation, before they engaged in a tag-team fight. Although Ayane became annoyed with Eliot and his lack of self-confidence, Gen Fu admired her fiery spirit and Eliot thanked her greatly for the fight, which caused Ayane to walk off, leaving Hayate trying to keep up with her. Sometime later, Ayane and Hayate argued about who should take down Genra; Hayate felt that as leader of the clan, it was his duty to take down the former master, but Ayane too felt it was her task, being Genra's foster daughter and heir. After fighting about it, they both agree to work together to take down Genra. During the rounds of the tournament, Hayate met with Helena Douglas, who recognized him as the subject of Project Epsilon. Hayate demanded to tell her why Genra joined DOATEC, but she claimed she didn't know, that Genra and even herself were just puppets that DOATEC controlled. After defeating Helena in battle, he told her that he would defeat Genra, and she should leave DOATEC for her own safety. A while later, Hayate and Ayane met up with Hayabusa and Irene, and the men engaged in battle to see who was the greater shinobi. The fight became extreme as the boys started a ninpo duel, but were stopped by Ayane as Irene was kidnapped by Christie. Hayabusa ran off to save Irene, but Hayate and Ayane realized that her kidnapping was just a distraction for Genra. The fallen master created a portal to Hellfire, and transformed into his powerful Omega form. The two shinobi try to take him down, but Genra proved too strong and they were starting to become overpowered by him. When Hayabusa realized that Christie was just a decoy, he quickly ran to aid his friends, and ran Genra through with the Dragon Sword. Before the monster could regenerate, Ayane and Hayate performed a duel-spell together and struck the final blow, killing Genra. After the tournament and defeating Omega, Hayate returned home now as the 18th master of the Mugen Tenshin Ninja Clan.
The Fourth DOA Tournament and the Fall of DOATEC
Angered for his clan being used as guinea pigs for DOATEC's inhuman experiments, Hayate resolved to take the corrupt corporation down with help from the CIA. As the fourth tournament approached, the Mugen Tenshin Clan set out to defeat DOATEC once and for all. Before they left for the DOATEC Tritower, Hayate encountered Kasumi, who tried to convince him to simply return to the village and prevent all-out war against DOATEC. Still filled with shame and grief over Kasumi being a renegade, Hayate didn't speak a word to her. However, Ayane intervened and stopped her sister, asking Hayate to go ahead without her. He left Ayane and Kasumi to battle. Hayate commanded his men to attack the Tritower, and with the assistance of Irene, he entered the building with Ayane and Hayabusa, fighting through DOATEC's private army. Part-way through the attack, he encountered Lisa (in her wrestling persona La Mariposa), who hinted that she had something to do with his vendetta against DOATEC. Hayate merely replied that she had done him a favor and repaid her with a fight. Hayate encountered Hitomi once again, who pleaded for him to come back with him to the dojo, admitting that she did not know what to do without him. Hayate told her that he couldn't because he was no longer Ein, and the fourth tournament was no tournament at all, but a war between DOATEC and his people. He then asked her to spar for a warm-up, for old time's sake, which she happily accepted. After the fight, they told each other to take care and Hitomi took her leave, obviously upset by the parting. In the end, Hayate joined up with Ayane again, and they tried to fight their way out as Ayane's Art of the Raging Mountain God spell starts to burn down the building. As they tried to leave, they were set upon by Alpha-152, the now-enhanced, new form of Kasumi Alpha. Despite the clone's strength and super-power abilities, the two shinobi managed to escape it and the Tritower complex as it burnt to the ground. During the escape, he also encountered Bayman and fought him, but both separated to focus on escaping the fallen building.
Dealings with DOATEC and the Attack on the MIST Laboratory
For the next two years the Mugen Tenshin Ninja Clan would know relative peace. One day, Helena, DOATEC's new President and CEO, gives Hayate an invitation to the luxury yacht
Freedom Survivor. Transported there by Zack, he wonders what Helena wants from him. Zack jokingly tells him that maybe she was setting him up with someone, although Hayate initially took it wrong. Zack corrects himself explaining he was to have a meeting with her. In the Executive Office, he meets his sister, Kasumi. Helena considers it an honor to have the eighteenth Master Ninja of the Mugen Tenshin in her presence, and proceeds to explain to him that Kasumi's clone, Alpha-152 is still at large, and that it would be too dangerous for Kasumi to do alone. Kasumi asks him to listen to her (Kasumi), that the Alpha affair was her mess alone to settle. However, Hayate agrees with Helena, saying that this whole issue is not just about her anymore, but the safety of their whole family and clan. But Kasumi runs out, saying that it was her fight alone. Hayate follows her and senses something was amiss. His youngest sister Ayane comes forth and lets him know that she's sensing something foul about Kasumi too. Hayate orders her to follow her, and find out her true intentions. Sometime later, Hayate is met by his best friend Hayabusa at the Ryugaku Temple. Hayabusa criticizes him for not being able to handle Kasumi and provokes him to fight each other, and Hayate was defeated; after the battle, the Master Ninja told him that don't let his emotions cloud his judgement. A few days later, he meets Bayman in the Middle East, and wonders what he was up to. Bayman tells him that he and Hayate are both looking for Kasumi for answers and they fight about it in hand-to-hand combat. Zack interrupts their battle, telling Hayate that Helena needs to talk about something important. At the
Freedom Survivor Helena tells him about a group called MIST. This group, according to her, was inside of DOATEC before they had a formal name, and that the Alpha project is in its final phase: Phase 4, which is the production and distribution of super soldiers to their clients, the militaries of the world's dominant nations. Hayate is infuriated to learn that he, his family, and his clan were used for the sole purpose of profit for Donovan. Helena tells Hayate that she has sent Kasumi to the Offshore Platform because of uncanny comings and goings from Miyako, Christie, and Lisa. Hayate, Hayabusa, and Ayane head to the location to stop Donovan's plans. During this time, the fifth DOA tournament is being held and on stopover, Hayate reunites with Hitomi, who proudly tells him that she's in the finals. He has a friendly spar with her to prepare her for her final match. Then he leaves with Ayane, but wishes Hitomi good luck. The two Mugen Tenshin ninja find Bayman again, who is infiltrating the rig to find Kasumi. Hayate fights him to see who will deal with his sister and wins. Bayman then helps him and Ayane find Kasumi and they confront her, who was in reality a Kasumi Alpha clone programmed into thinking that she is the original. After killing the clone, Hayate, Bayman, and Ayane head to deeper into the platform. Taking an ID card off of a scientist they knocked unconscious, they discover the platform was actually a cover for MIST's operations. Bayman tells the two ninja to carry on without him and finish the battle. At the lowest level, Hayate and Ayane confront Rig. The hooded man taunts Hayate into a battle, who emerges victorious, but suddenly, the ninja is impaled with beams of light. As he is captured by Rig, Ayane is forced to flee to warn Hayabusa. As the real Kasumi appears to rescue him, Lisa appears and realizes that Donovan is reactivating Project Epsilon, proceeding to override the process when he activates Phase 4. After the scientist frees Hayate, the ninja destroy Alpha-152 and escape the crumbling facility back to the
Freedom Survivor. After Kasumi gives her thanks to him, Hayate watches with Ayane and Hayabusa as his sister leaves to defeat Donovan.
Relationships
Kasumi
Kasumi is Hayate's younger sister. Hayate was a very protective and understanding brother to Kasumi and they had a close brother/sister relationship. After Hayate was injured by Raidou, Kasumi sought revenge on Raidou for what he did to her dear brother, seeking to restore his honor. They have a very strong bond, even as Hayate becomes the leader of the Mugen Tenshin Clan and Kasumi becomes a runaway shinobi. Hayate will never harm Kasumi himself, but in the past, he would not speak to her out of the shame he feels over Kasumi's abandonment. Still, no matter what, Hayate and Kasumi will always be loyal to each other. In
Dead or Alive 5, Kasumi and Hayate seem to be on better terms with each other, as they speak and work together to stop Phase 4 of Donovan's Alpha plan. He is shown to know his younger sister well, as he caught on almost immediately in
Dead or Alive 5 that the Kasumi seen in the beginning of the game was not the real Kasumi, but simply her clone, Alpha. They gain a long overdue tag union in
Dead or Alive 5 Ultimate consisting of one tag with each leading, one pre-animated sequence, one winning sequence, and personally calling each other when tagging. Kasumi leads in an "Oboro-type" tag, whereas in the second tag where Hayate leads they perform ninja aerial techniques, lifting the opponent sky high before ending with Kasumi kicking them repeatedly to the ground. As Ein, because he didn’t remember her, Ein had a somewhat antagonistic and mistrusting relationship towards Kasumi during the second DOA tournament.
Ayane
The connection between Ayane and Hayate is strong, even though he doesn’t care for her as much as Kasumi. Hayate is Ayane's half-brother, although he was unaware of this as Ayane's heritage was kept secret. When she was a child, Hayate was one of the few people who did not see Ayane as a "demon child". His kindness towards her, combined with his strength and resolve, led Ayane to admire Hayate greatly, an admiration that may have turned into love. Though it is unknown if Hayate is even aware of these feelings, let alone if he returns them, their familial bond is most definitely evident. He is also shown to be protective of her, as shown when he fought Brad Wong for trying to make a pass at her. They remain at each other's side and look out and protect one another as partners-in-arms. As Ein, because he didn’t remember her, Ein had a somewhat antagonistic and mistrusting relationship towards Ayane during the second DOA tournament.
Ryu Hayabusa
It is unclear exactly when the two met but Hayate and Hayabusa have always been the best of friends, serving as an example of the close relations the two clans had with one another. Before his abduction by DOATEC, Hayate had Hayabusa promise to look over Kasumi; thusly when Kasumi was to appear in the Dead or Alive Tournaments, he agreed to participate as well. Hayabusa and Hayate also share similar techniques, probably due to them practicing together as kids. This is evidenced from during the 3rd tournament, as seen through
Dead or Alive: Dimensions, when Hayate and Hayabusa simultaneously executed a master ninja rank Ninpo on each other. As both were born to be the next leaders of their clans and have assumed the positions, the two are able to relate to each other on a level apart from other shinobi in their clans, as well as having a friendly rivalry and intense trust in each other’s loyalty and abilities.
Hitomi
Hitomi found Hayate in the Black Forest in Germany. After being used for the Epsilon Project, he didn't remember anything so she brought him back to the family dojo, where her family took him in and named him "Ein". The two of them trained together under Hitomi’s father, and were close enough to being friends. Ein was trusted enough to become an instructor in the dojo. Years later Ein departed for the second Dead or Alive tournament, where he recovered from his amnesia. After this, Ein remembered who he was and left for the Mugen Tenshin Ninja Clan. Despite Hayate moving on with the Mugen Tenshin, and hardly ever seeing her, Hitomi still had feelings for him; she is the only non-ninja person to have any type of relationship with him. During the third and fourth Dead or Alive Tournaments, Hitomi tried to convince Hayate to go back to Germany with her, but he tells her he cannot return with her having to settle this pleading by challenging her to a fight. Hayate trusts Hitomi so much to the point that he admits that he is a ninja, which is an important secret to keep. Although she hates to let him go, Hitomi accepts this and allows him to continue his life as a ninja. Despite all that happened in
Dead or Alive 5, they both met again, Hitomi asked Hayate if she could fight with him in a friendly match, which Hayate accepted. After the fight, Ayane appeared and Hayate had no choice but to continue his mission to destroy Alpha-152 and Donovan's new organization, MIST, Hayate bid farewell to Hitomi and she looked at him in hope that they will meet again in the future, which they most likely will.
Jann Lee
During the events of
Dead or Alive 2, Ein is Jann Lee’s rival and ace. Winning in tag battles, they will celebrate the victory together. During the events of the third tournament, as Hayate and Hitomi are about to have a friendly battle, Hitomi tries to rush to aid Leifang from Jann Lee's attack which sends her flying into the table but Leifang tells Hitomi to stay out of her affairs. Jann Lee ignores the girls seeing Hayate and asks him to fight with him as he sees that he is a worthy challenge and it is unknown what happened to the girls then.
Helena
In the second tournament, Ein meets Helena Douglas who confused the amnesiac Ein by talking to him about the Epsilon Project but he didn't remember anything about it. In the end, they fight and Helena was defeated by him. Between then and the 5th tournament, the two are on bad terms with each other, since Helena is head of DOATEC which has abused Hayate’s clan for a long time. After the destruction if DOATEC and Helena’s resurfacing with a rejuvenated and much-changed DOATEC, it appears that Helena and Hayate have entered a more professional relationship, as she is able to both contact him and summon him for meetings. The two work together to keep tabs on the remains of DOATEC’s shady business and Donovan.
Lisa
Lisa had been involved with and led Project Epsilon. In
Dead or Alive 3, during the catastrophe of the DOATEC lab being destroyed, Hayate and Lisa escaped in a helicopter, which crash landed. Lisa subsequently allowed Hayate to escape and soon regain his memory. In
Dead or Alive 4, Lisa flies in on Hayate. Hayate thanks her for making him come destroy DOATEC and giving him a purpose in life, in return for which he battles her and defeats her easily. Later on in
Dead or Alive 5, Lisa comes to his aid and frees Hayate from a trap laid by Rig that would have restarted Project Epsilon. What Lisa’s motivations are in assisting Hayate is currently unknown.
Zack
Zack’s main interaction with Hayate has been as Helena’s spokesperson in
Dead or Alive 5. He escorts Hayate and Ayane to meet with Helena via helicopter and while flying, jokes to Hayate about setting him up with someone. This irks the shinobi and Zack quickly changes the topic to clear up the misunderstanding. It appears that Hayate at least trusts Zack to go with him, but apparently finds his infinite exuberance and teasing annoying. Zack, meanwhile, has no problem ruffling Hayate’s feathers and tries to get the young shinobi to loosen up.
Bayman
In
Dead or Alive 5, Bayman seems to have a slight respect for Hayate, possibly due to him being a shinobi. This has shown during their fight, as Bayman was curious to see what Hayate was capable of. During the attack on MIST, Bayman helps Hayate and Ayane break into the lab. It may be possible that both also respect each other due to their martial art.
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