During the summer vacation before his senior year of high school, Yan Yu met his tutor Mu Yao. He regarded him as the moon under the sea, thinking that if he caught him, he would catch hope and light. At the age of 18, he bid farewell to Mu Yao completely. Goodbye was in the classroom. They hugged each other tightly in the darkness and became each other's light.
Concept: We can't choose gender, but we can choose love