So Pure, So Flirtatious (1970)

High school student Yang Ming is a typical underachiever. He gets into fights, skips class, and cheats on his schoolwork. When the school flower confronts him, he feels ashamed and wants to change, but he has fallen too far behind. However, by a stroke of fate, he ends up gaining a pair of contacts that allow him to change his visual perspective, completely altering the course of his future!