We got to know each other and grew up in a dormitory of a female engineering college. The royal sister is ice-cold and beautiful, the loli has big breasts and the loli is cute. The green tea has a scheming mind, the black tea has a beautiful heart and a strong heart, and is a man who is both a foreign man and a smart woman. We fall in love in our freshman year, we have few friendships in our sophomore year, we study together in our junior year, and we make decisions in our senior year. Some people succeed and some fall down. Graduates are scattered all over the place, some persist, others are depressed. Four years after graduation, the relationship between people has changed, life has been tortured, and the gap has become wider. Looking back, which step was wrong, and where to go forward?