[1] It does not go well for the samurai, and as the Oni prepare to make their final push to destroy a local temple, Monk Gen'un wipes them all out in one blow with his magic powers.

The film then shifts focus over to Jun Tendo, a shy teenage boy, who is transported 1200 years into Japan's past to the Heian era.

Gen'un starts by telling Jun that he is being targeted by the dark monsters and about the war between humans and Oni back in the Heian era.

Jun passes out and wakes up at the temple where he meets Raiko Minamoto, a highly skilled swordsman that fights alongside of Gen'un.

Jun sees that Raiko is in deep trouble and screams his name, awakening the powerful dragon in the process without the incantation.

Mizuha jumps on Orochi and escapes with Jun, but they soon hit an anti-Oni barrier and gets struck down by magic power.

Charles Webb wrote in his review that Jun, the main character, spends the first half or so of the movie "whining and repeating things that were just said to him in the form of a question".

[1] Jason Yadao wrote in his review for the Honolulu Star-Advertiser that the film is "hamstrung by the story", which he found to be unoriginal.

"[2] Marcello, founder of japancinema.net, agreed, stating "the whole anime lacks a coherent story" and that "characters appear and disappear before the viewer has a chance to get to know them or care about what happens to them.

"[3] However, he did like that "each frame of this film is hand-drawn, and some of the imagery is quite beautiful, while the supernatural battle scenes are quite epic in scope.