One Pen, Overturning the History of Magic for Thousands of Years!

Erin used a pen to rub the thousand-year magic system on the ground: The noble ridiculed her that "a mute is worthy of playing magic"? She backhandedly sold 100,000 "Silent Barrier Scrolls", causing the entire upper class to lose their voice! The association's archmage angrily accused her of "blasphemy"? She directly carved the last oracle of the gods before they fell asleep into the sky, and let the source of magic crown her! When the demons of the abyss invaded the mainland and everyone knelt down to pray for the gods to come—— She stood in the middle of the torrent of runes and chuckled: "God? Now, I am the oracle itself."