I Seem to Be Really Gifted!

High-dimensional fragments arrive on earth, and mankind enters the age of magic. First, Miss Witch broke into my room on a rainy night and asked me to sign a contract with her! Then the computing power is horribly enhanced, and you can learn various runes and spells instantly! After meeting the Paladin. I gained the Holy Light energy inexplicably again! Gradually, my strength grew so much that even I couldn't understand it. PS: Invincible writing, easy flow, single female protagonist