A is a student who participated in a doctor's exploration project due to an accident. A mechanical brain was installed in the place where the left brain was removed. Mechanical organs are allowed and encouraged to be developed, but brains are different. Mechanical brains touch upon taboos about what it means to be human, and messy discussions about human rights. What qualifies as a human being? Does it mean having a universal human form, having human thoughts, having character and various human flaws like humans? So, if a human can survive with only his head, is he a human? If he only has human form and no human thoughts, is he human? So if the brain is dead but the body is still alive, is it still a human being? If there really is a mechanical brain, can it replicate human thinking and personality? So if you combine such a mechanical brain with a mechanical body, is the robot still the same person? The mechanical brain is an experimental material, but can't we say that this human being is just a worker who makes the mechanical brain? What is artificial intelligence? So is the personality created in this way artificial intelligence mentioned above? Based on this, there is this story. But this story will not discuss these issues, but will only use them as a guide to raise some questions. The story as a whole is not a hard science fiction, "love" is the main line, and science fiction factors serve as the main contradiction and the driving role of the plot ~ I wrote this story because I was tired of the love that the public understands, and tired of all kinds of stupid plots. This is my first time writing, the image is too strong, I will gradually improve it ~