"Reverse Light Source" is a story about Fang Yuan, a smart, handsome boy and Liang Guang, a quiet boy but he seems like have a lot of things to say. In the university life, Fang Yuan helps Liang Guang open his heart, but when their relationship becomes better, it predicts something will happen. After all, can Liang Guang open his heart to face the amazing student life. What is the feeling of Fang Yuang. How can Liang Guang face with his true identity? How will their feeling change?