TOUGEN ANKI

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 awakes to find himself before Oni Agency member Naito Mudano, who evaluates Shiki's potential as a valuable addition to the organization.

Mudano splits the new students into teams before the strange game of tag begins, but Shiki soon gets into a fight with his teammate Jin Kougasaki.

Shiki collapses after overexerting himself during his fight with the titan; unconcerned about his teammates, Kougasaki attempts to take down Mudano.

Mudano takes Shiki and the others to the Oni Agency's Kyoto base; but a sinister plot to disturb their hidden sanctuary is already quietly underway.

After a Momotaro assassin suddenly kills his adoptive father, Shiki vows to avenge him; but first, he must learn to control his newly awakened Oni blood.