Beat Blades Haruka:Story

Many centuries ago
The game begins with two figures clashing : Haruka of the Crescent Moons and Kikyou-Dayu the Red Guardian of the Tetra Sealers. The former quickly gets the upper-hand, and slays Kikyou with one powerful attack despite her enemy's persistence. After the battle, Subaru catches up to Haruka and the two Blades proceed to the Seiryu castle. However, they are stopped by Orochimaru the Blue Guardian, who had stolen the Time Leap Bell of the Crescent Moons and brought it back to the Noroi Faction headquarters. Subaru and Orochimaru then start clashing and though Orochimaru is powerful, it quickly grows obvious that the Blade has the upper hand. However, as the bell sounds and the castle was suddenly surrounded by flames, Ittou Hagane, the White Guardian, intervened. He covers Orochimaru's retreat then in one powerful slash cuts off Subaru's right arm. As she lays wounded, Subaru tells Haruka to sneak into the castle so she can follow the Noroi Faction in their time leap, before fighting Ittou once more to buy her time.

In the present day
Our hero Takamaru is trying to convince his latest crush, a girl called Saginomiya to go on a date with him. However, because of Narika Shihoudou's efforts, she knows all about his computer's massive stored amount of porn and turns him down. Dejected, Takamaru wanders near the gym where he sees a huge crowd gathered around it. Curiosity brings him closer as well, and allows him to see a beautiful woman dancing gracefully in a leotard. He instantly falls for her, but his daydreaming is cut short by a scream : a man is standing on a building on the verge of suicide.Without hesitation, Takamaru runs to the top and tries to convince the man to reconsider. As he seems to have succeeded, an odd voice resounds and the man leaps off. Takamaru barely reaches him in time and holds him up, before his vision fades to black. He wakes up in the infirmary with the rescued man from earlier in the next bed, and the woman from earlier looking over him. She introduces herself as Haruka Takamori and appears to already know of him somehow, though she was surprised and pleasantly surprised by the selflesness of his rescue.

After Haruka's departure, Akira Kurogane enters the room and mentions that Haruka despite only arriving a week ago has already attracted much male attention. A love-struck Takamaru however mostly ignores her and rushes out of the room. Haruka then reappears from her hiding spot and discusses with Arika how the Noroi faction had controlled the suicidal man and will probably strike this very night.

Later in the dojo, Takamaru talks with Narika about his crush while she not-so-subtly tries to go on a date with him. They are interrupted by Narika's father Seigen who mentions to Narika that Noroi should soon appear and that their previous plan has shifted a bit. Seigen then introduces his new assistant instructor Haruka who quickly ends up sparring first Takamaru, then Narika and beating them both.

As Takamaru and Narika walk back home, they are surrounded by mysterious creatures called Genin. Though the two of them put up a good fight, the creatures seem to be completely impervious to harm. Just as they are getting overrun however, Haruka appears and quickly tells them about Noroi and their time leap before Orochimaru himself intrudes, intent on kidnapping Takamaru and using him to restore Noroi to full power. Haruka tries to hold him off but is quickly overpowered, though she manages to retreat thanks to Takamaru and Seigen's intervention. As both her and Takamaru head to an alley, she tells him of the Dragonian's rôle in giving power to the Blades and then asks if he could have Dragon Synergy with her (sex) in order to regain her strength. Though initially shocked, he quickly complies out of both worry for the others and lust. Haruka then faces Orochimaru once more on a much more even footing, but before their fight can finish, Ensai Mukurou the Black Guardian with Ittou and an army of genins by his side arrives to finish the job himself. As he is about to kidnap the Dragonian, Akira appears and activates a powerful seal : this seal had been prepared for centuries and designed to bring intense pain to all those who were granted power by Noroi. Overwhelmed by the pain, the Noroi Faction is forced to retreat, but manages to kidnap Seigen and many Crescent moon ninjas as they do so and projects his head onto the night, threatening the city and its inhabitants.

The first Tetra Castle
Following all those events, Akira decided to welcome all of them into her home to better coordinate their efforts, with her becoming the new leader of the Anti-Noroi Task force following Seigen's disappearance. Soon after, Takamaru and Haruka start doing regular Dragon Synergy, and Haruka tells her about Subaru's kidnapping, as Orochimaru mentioned she was still alive at their base. Meanwhile, Ensai decides to start sending a few genins to spread terror in the city to reinforce Noroi's power until the seal weakens. Narika starts feeling helpless in the fanfare of activity, telling Takamaru how she was meant to be the Blade fighting at his side, when they are summoned to the Crescent Moon headquarters. Haruka is sent out to fight her first genin, giving herself a « super-hero » appearance to give hope to the city and therefore minimize Noroi's power. Witnessing genin fall one after another to Haruka's power, Ensai starts sending their weaker Kainin in the hopes of stopping the Blade, but those are soon outmatched. However, Haruka's constant battles soon take their toll and she falls sick. As a genin grows closer to causing a major disaster Narika volunteers to take up Haruka's mission and becomes a Blade herself after sleeping with Takamaru. As the Blades only grow stronger Ensai sends Orochimaru and his Tetra castle to the city in order to quicken Noroi's revival while he tries to replenish their ranks. Though the seal is still active, Orochimaru is protected from its effects by a Mark of the Outside. Soon after the Castle's appearance however, the two blades invade it and manage to defeat Orochimaru.

Subaru's return
As the castle disappears and the Blades apprehend Orochimaru, he is stabbed in the back by shurikens thrown by none other than Subaru, dressed in red with a new arm and an odd expression. Though Haruka is overjoyed, Orochimaru warns that she is infected with Noroi's power which Subaru herself confirms, blaming Haruka for her imprisonment and ensuing rapes. A grief-stricken Haruka despite herself retreats with Narika and Orochimaru in tow, and swears to herself that she shall return Subaru to their side. Though Arika wanted to torture Orochimaru to extract information, Takamaru decides against it and starts sympathizing with the Tetra Sealer. Haruka confronts Subaru once more as she is causing panic, but finds herself defeated by her old ally and is raped in front of a local news team. Subaru then takes refuge in a Tetra Castle, Byakkou, which belongs to Ittou. As Orochimaru grows slowly attached to the Blades, he mentions the oddity of this, as Kikyou-Dayu's castle is available following her death. He even mentions that when confronting Subaru, they should take out her Mark of the Outside. The Blades attack the new Castle and beat Subaru but are shocked to find that extracting the Mark had no effect. Orochimaru then contacts them and tells them to cut off her new arm. Haruka manages to cut it in a single slice, which causes Subaru to writhe in agony before fainting.

The Red Ghost
As the castle disappears, the arm slithers away before taking the form of Kikyou-Dayu herself, partially resurrected by Noroi's power. As it turns out, she had been possessing Subaru all along as revenge on the Blades. She mocks the band before retreating to her own Tetra Castle.