There is a place with beautiful mountains and clear waters, singing birds and fragrant flowers; there is a place with beautiful bells and graces and outstanding people. This place is XX High School. (Princess: Ahem, our school is so famous but why doesn't it have a name? Queen: Is it important? Princess:...) XX High School is the most famous high school in City A, but the strange thing is that it only has one senior class, with only more than 20 people in the class. The legend is that XX High School does not pay attention to the senior year of high school and has no teachers to teach the senior year of high school at all, so a large number of students transferred to another school after completing the second year of high school. There is also a legend that the tuition for the senior year of XX High School is very expensive and ordinary people cannot afford it, so a large number of students transferred to another school after completing the second year of high school. But legends are just legends after all. Only the students in Class 1 of Senior High School know what Class 1 is really like...