Spirit of the King

When Jason Pugnis, a 21-year-old amateur boxer and college student, discovers that he possesses the spirit of an ancient warrior monk king, his world is turned upside down. But there's no time for contemplation as the LITRPG system takes over modern-day Earth, and a powerful conqueror named Ragnarok uses the system to prepare civilizations for combat against him. Jason must quickly learn to master the system's complex rules and mechanics in order to survive and unlock new feats. With the fate of humanity hanging in the balance, Jason must use his newfound strength and courage to face down impossible odds and become the hero that Earth needs.