I can tell you guys what the real ending will look like:
Wataru encounters Taiga, who tells Wataru the reason for Mio's death was to awaken his Fangire Form. Taiga transforms into a monstrous Cobra Fangire and attacks Kiva-transformed Wataru mercilessly. Nago arrives, but is interrupted by Bishop who launches a fierce attack upon him.
Nago changes into IXA and manages to slay him, but not before Bishop stabs him in the back, literally. Horrified, Megumi runs to Nago's side to help him, but Taiga notices her and kills her as well. Filled with blind rage, Kiva lets out a roar and wings erupt from his back.
Wataru flies towards Taiga and delivers a powerful drop kick at Taiga's chest and sends him flying to the ground. Taiga leaps at Wataru and the two fight for what seems like an eternity; before Kiva decides to end it with an utlra-powered, flying Wake Up kick, not only killing Taiga, but also causing the timeline to reset, making Fangires non-existant and everyone, except Mio, is either revived or changed into a human, having no knowledge of their previous lives.
Wataru goes back to making his violins as usual. Suddenly, he hears a voice and turns around, looking at Mio's ghost. She smiles at him before disappearing. Wataru runs outside to see Maya and Otoya, smiling at him. Wataru begins to shed tears at the sight of his parents and runs to embrace them.