She travels between the generations of her parents and children, and everything she sees and hears is integrated into stories. So what will her story be like, changing the professor's experience? When Lily is no longer the person the professor cares about, but just one of his childhood friends. When the professor falls in love with a girl who suddenly appears and disappears, what will the story be like? I would rather the professor is no longer the professor who said "look at me", and I also want him to be happy.