The only two Buranki currently on Earth that possess a beating heart are Oubu and Entei. What's more, Reoko has defeated the headless Buranki, also called the "déraciné," and obtained its heart. One man declares this a situation that cannot be overlooked, and sends several Bubuki users to Japan in order to reclaim the stolen heart. Meanwhile, as Azuma and his companions continue to ride the Buranki transport train, a man carrying a guitar shows up in front of them and forces Hiiragi to slam on the brakes. Just who is this man?

Azuma does everything he can to restart the heart of Oubu, which stopped beating during the battle with the American Bubuki users. Hiiragi tries to protect Azuma from a vicious attack, but ends up sent flying and crashes to the ground. The American Bubuki user Luis commends Hiiragi for risking himself to save his comrade, and criticizes Azuma for just letting his friend protect him. Epizo stops Luis and declares that the two team leaders should settle this score together, and faces Azuma with fists at the ready.

As Reoko, full of bitter resentment, grasps Migiwa in Entei's hand to try to crush her, both women look back to when they were sixteen years old and best friends. Reoko called forth Entei in Ueno to bring the long-buried existence of Buranki to light, but Migiwa burned Entei's limbs to stop this uprising, which left Reoko's body with the curse it still bears today. Why did Reoko decide to walk a path of blood after she was released from her years of confinement? Their hidden past is finally revealed.