Lin Xingchen (female protagonist): 19 years old, a genius girl in the physics department, with a cold and focused appearance, but a sensitive and gentle heart. She has a hidden "Star Observer" Weibo account to record her secret love.
· Lu Yu (male protagonist): 21 years old, a student in the Department of Computer Science and the lead singer of the campus band. He looks sunny and cheerful, but in fact he is lonely due to family reasons. He plays in the campus piano room at night as a "night pianist"
Special setting: The two met in real life because of the intersection of courses, but they did not know that they were the "Star Observer" and "Night Piano Player" who had been confiding in each other on the Internet for a year.
