I’m Already a Max-Level Immortal Emperor, While My Opponent Just Changed Classes

The apocalypse arrived, and the Second World, the Fantasy World, descended. Everyone could log in to protect themselves! Su Han, who had been reborn, woke to find himself back on the day the Fantasy World appeared. Thanks to his foresight, he quickly obtained the Sage-level cultivation technique, the Book of Changes, which could deduce anything! He could learn any technique!