Capítulo 657: Chapter 657: Many Mysterious Things

"I won't tell you, just hold on to this key for now. Your current strength isn't enough to open the Demon Race's vault. Wait until you reach the Heavenly Rank!" Lin Yi shook his head slightly, then continued on his way.

"Lin Yi, we picked this up from a Demon King of Heavenly Rank!" Lin Yi took out a black Token.

This black Token was only the size of a palm, emitting a dark sheen, looking as though it was cast from black iron. Yet upon it were etched some strange Runes, seemingly containing many mystical secrets.

At first glance, this black Token appeared rather ordinary, but the moment Lin Yi held it in his hand, he felt an oddly familiar sensation, as if he had merged with it.

Lin Yi gazed intently at the black Token in Lin Yi's hand, "What exactly does this black Token represent?"