This is a very normal feeling. When we finish reading a novel or anime, we will have a strong emotional resonance with the plot, characters, and the world. We will often feel lost, confused, and at a loss. This is because we spend a lot of time and energy building these virtual worlds and characters, and once we leave this world, we feel a deep sense of loss. However, this kind of feeling also allows us to better understand the plot and characters in the novel, and to think deeply about the meaning and value of it. At the same time, it also allows us to reflect on our lifestyle and values so that we can better adapt to the changes and challenges in life.