Crossing over to a fantasy world of magic and battle auras, Lei Luo accidentally crossed over to the Xiluo Magic Academy and became a librarian. At the same time, he obtained a Sign-in System. He would receive various rewards if he signed in at different locations. Signed in at the library and obtained [Top-grade Meditation Technique] from the treasure chest! Signed in on the Magic Guide Book and obtained [Magic Increase] from the treasure chest! Signed in on the Magic Stone Tablet and obtained [Forbidden Magic] from the treasure chest! Lei Luo unintentionally activated something that would completely turn his life around He started signing in from the Magic Academy and slowly advanced from a Magic Apprentice to become the most powerful person in the Magic Academy. He led the Magic Knights that shocked the world to eliminate noble factions and fight against the invasion of the demon tribe. Changing the world began with him. From a desolate small town to the lord of the world, he reignited the glory of an empire that had been down and out for a century.