There is a saying in Kyoto No. 1 Middle School: "Class 9 Sakura Class, Brother Xing is Class 9." Zhiluo is very curious about this "Brother Xing". During the art festival, she fell in love with "Brother Xing" at first sight, and from then on she embarked on the road of no return as a girl who has a crush on Brother Xing. Doing exercises gives their class high marks, even if he doesn't do exercises. I switched from literature to science for him, but he is just as good at literature and science. In order to pursue him, she learned a bunch of earthy love words, but they turned out to be of no use... Later, her love changed from dark to bright.