After waiting and working hard, little brother Chen Dongxu finally got engaged to his sister who is five years older than him. At the beginning of the school year, under Chen Dongxu's deliberate arrangement, he took his sister's class as an elective. After serving as a teaching assistant, her charming sister Zhang Yilin became popular on campus and gained a lot of fans. This doesn't overturn the little brother's jealousy. Let's see how he guards!
Purpose: For love, strive to become a better person