I Traveled Through Time to Cultivate Immortality and Become a King

A man accidentally travels to a different world, where there is abundant spiritual power and many monsters. In order to help the original owner revenge and become stronger, the man constantly upgrades and practices. Because he has a system companion, he upgrades very fast, and is targeted. The hero proves his strength to people with his own strength, and then ascends to immortality and continues to practice. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.