A Silver Wyvern?

If Ace hadn't seen with his own eyes, he wouldn't have believed that there were two colossal mountains instead of just one! 

The Sun Mountain had completely vanished without a trace, and there was only an empty grass field in its place, which gave Ace a very shady feeling. 

'Can a secret realm vanish an entire mountain?' Ace wondered with a grim look. But the answer to his question was right in front of him, and despite not wanting to believe it, he knew it had something to do with the Sun Secret Realm's destruction. 

'I think it's called the Heaven's Secret for this sort of reason…' Ace mused as this was the only explanation he could think of. Anything related to Heaven was no joke, and he was living proof of just what it means to be going against Heaven.