Teenager Shiki is attacked by a mysterious man. As his foster father Tsuyoshi helps him flee, he learns of his surprising and legendary heritage.

Shiki wakes up confused in front of Naito, who explains the situation between the Oni and the Momotaro.

The first test the boys face to enter the academy is playing "demon catcher."

If they want to pass the test their teacher has given them, students must work together.

The students reach the Kyoto underground and discover new things about the war they are involved in.

The undead attack the students and Shiki is forced to make a decision that will change his mind.

Yomogi uses his power to seal off the underground and the students must fight to survive.

Kuina fights a battle against another ugly, but this time he finds himself in a very delicate situation.