Technology Reincarnation Magic

"How do you think a story should start to be amazing?" Is it a giant mecha falling from the sky, or is a handsome brown-haired girl using magic suddenly appearing in front of me? Who knows, at least at this moment he... Doesn't have the power to choose. As the brown-haired girl in a trench coat in front of him tore off the mechanical head of the mecha, his once peaceful daily routine was also shattered. The story surrounding a world where technology and magic coexist suddenly begins...