Versatile Mage

Our hero, Mo Fan, inherits a magical necklace—the next day, he wakes up to find that the world has changed. His high school now teaches magic, and students are encouraged to try and become accomplished magicians. A world that ran on science now runs on magic. However, some things are still the same. He still has a teacher who sees him as a hopeless student, classmates who look the same, a father who struggles to make ends meet, and a not-by-blood little sister who can't walk on her own. However