Witnessing Tokiwa Sougo using the power of Ohma Zi-O to reset the world, the crisis in the Zi-O world was not truly averted, as the villianous demon king was still lurking, waiting for his chance to reappear. Kadoya Tsukasa, constantly tracking this dark force, arrived at a large mansion at the entrance of a temporal rift, vowing to uncover the「true Sougo」.

■ Ohma Zi-O
(Voice: Rikiya Koyama)
The Demon King. In the TV series, he ruled 50 years in the future