Monster of Mobius (FF)

After a tragic incident causes the blue blur himself become possessed under the control of a devious god, the Restoration continues to attempt and retrieve the seven chaos emeralds to taken down this demon, known as Xenophanes, without facing any roadblocks or obstacles in their way.

Without facing any roadblocks or obstacles in their way..which is what they hoped for.

As the order and hope slowly lessens by the second, putting fear, despair, and uncertainty casually inserts themselves after losing lives; The two tailed fox faces mental and internal thoughts with Xenophanes, he faces bigger threats towards the evil spirit, as well as his surroundings and the people around him.

It's only until a new power source is fueled for this monster is when it's too late, and Tails needs to face his friend and foe alone.