The Missing Ninth Classroom

First, on the evening of June 6, a strange black figure suddenly appeared near the faculty dormitory. Then the ninth classroom where Gu Ning was teaching suddenly became the eighth classroom. A student who usually likes to wear red coats hates the color red inexplicably; another child from a good family asked her to apply for a poverty fund... She found that everything around her started to look strange. * "I remember Teacher Xin said that your family situation is good. Did something happen?" "Which Teacher Xin?" "Teacher Xin Gengji from the Music Department lives very close to your family." "I don't know Teacher Xin?" * Xin Geng is her boyfriend and they have known each other for 5 years. He is a perfect man, rich and handsome, and he is also a world-famous violinist. But suddenly he came to their school and became the music teacher in the school. Later, he took the initiative to meet her, started pursuing her, and became a couple. But now, he has disappeared inexplicably. It was as if he had never existed. There was no trace of his existence in the entire school or city. No one had ever heard of Xin Gengji. But Gu Ning clearly remembered every bit of the relationship between the two, and she began to realize—— Something is wrong with the world.