In The Apocalypse With My Sacred Dimension System

After being betrayed by his friend to give them time to escape the zombies, Theodore died horribly that day. When Theodore felt that he was certain to die, he miraculously returned to three years ago before the zombie apocalypse came to destroy humanity on the earth. Not only that Theodore got another advantage after repeating time, he got a system whose power was heavenly! [Sacred Dimension System has appeared!] [Binding into Host body ....] [Waiting ....] [Binding is complete!] Theodore surprisingly obtained a mysterious dimension that he can use to survive during the impending zombie apocalypse! — Description from novelcodex.org