Pāpīyas Metamorphosis - Demon King of a Billionfold Heavens (波旬変生・三千大千天魔王
, Hajun Henjō - Sanzen Daisen Ten Maō?) is the Noble Phantasm of Nobunaga Oda.

The figure of the Demon King of the Sixth Heaven that transcends fear and reverence poured into Nobunaga of past, present, and future. It transforms oneself into a true Demon King, "Demon King of a Billionfold Heavens", who deceives all gods and Buddhas. The end point of the anti-heroic demon "Demon Nobunaga" who burns out Mystery.

Since this form never existed in the original history, its existence is unstable, and it can only be revealed for a short time.

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