The noble and cool eldest lady, always the little idiot outside the situation, the virtuous and virtuous good girl, the charming little woman. Dormitory 306 is of the highest quality among freshmen, and is also talked about and sought after by the entire college. But seeing that the good girl and the little girl have found boyfriends, why are the eldest lady and the little idiot always single? It turns out that between the eldest lady and the little idiot...? ? ? Who hasn't had the youth to say that he has no regrets is a lie? Who hasn't felt that the world belongs to them when they were young?