RWBY: The Phantom of Remnant

Magna died peacefully on the night of his 21st birthday. His only regret? Not being able to live a proper life outside the walls of a hospital. Suddenly, he finds himself inside the body of a young boy that looked identical to him, inside a world that existed on the internet. Realising where he is and what happened to him, Magna decided to take this second chance and live this life to the fullest.