What to Do When Suddenly Transformed into a Magical Girl?

Li You was originally an ordinary, unremarkable male high school student.Just when he thought he would live an ordinary life...Then his life underwent earth-shattering changes.An onerous mission suddenly bestowed upon him, countless evil beings stirring in the shadows, the world gradually tottering, a peaceful life becoming more and more distant…It all had to start from when he discovered his old man's secret.