Xu Yizhi knew that his love could not be seen in the light.
Xu Yizhi knew that she shouldn't like him,
Xu Yizhi knew that she couldn't let him discover his love.
Xu Yizhi knew that it was impossible for him to like her,
Xu Yizhi knew that he was straight,
Xu Yizhi doesn't know whether he likes Xu Yizhi.
Concept: A bitter and sad secret love