Soul Sword

In a world where the strong were respected, there was a rising sun that maintained peace and a bright young man. He tried his best to protect what he wanted to protect. One day, he left that world at the command of his master and came to another world outside. In this world, demons and demons emerged one after another... Can a young man who was originally adopted by his master and pampered by his senior brother find his parents in this world where monsters and demons emerge in endlessly?