Haruka, a warrior of the Jougenshuu, battles the malevolent Noroitou to prevent them from rewriting history. To fuel her combat abilities, she must undergo the Ryuurinko ritual to replenish her "H-power" through intimate contact with the leader, Takamaru. After being captured and assaulted by the enemy, Haruka is rescued by Takamaru and Narika, eventually unlocking the powerful Heaven Phoenix transformation to fight back.
Narika transforms into a Blade to rescue Haruka from the Noroitou, but finds herself trapped in a barrier where a mind-controlled Haruka attacks her. After being rescued by Takamaru and restoring their strength through their spiritual bond, the group infiltrates the Seiryuu Kingdom. By combining their powers, Haruka and Narika successfully break through the enemy's defenses and defeat the villainous Orochimaru.
Haruka and Narika venture out to fight the Noroi, but Haruka is captured and tormented by Subaru, who has betrayed her to join the enemy. After a desperate attempt to increase her power through sexual stimulation, Haruka is nearly corrupted by Subaru's darkness before being cleansed by Takumaru. However, the battle culminates in the breaking of the Jougenshuu seal, paving the way for the Noroi's revival and the appearance of the fortress Mugenjou.