My Flat-Headed Brother Is Actually Learning Conspiracy Theories

[Coexistence of humans and animals + academy style + system holy body + single female protagonist] What kind of bizarre world is this? According to historical records, about 300 years ago, around 1724, Blue Star was invaded by an alien civilization. However, this civilization turned out to be an animal civilization, which is absurd yet realistic. What is incredible is that the invasion method of beast civilization is through time travel. Most of the invading beasts replaced the original beasts, which is known in history as the Great Revolution of Beast Evolution. In order to protect Blue Star, humans have launched industrial revolutions and scientific revolutions one after another. However, beasts also know how to prepare for rainy days. Not only have they stepped into the wave of technological revolution, they have also formed a hodgepodge with humans. From this moment on, Blue Star becomes more complicated and confusing. ... When Han Shu was in school, he saw a snake that hissed and screamed strangely from time to time sitting on the left side of his seat, and a lazy and elegant black cat sitting on the right side of his seat, and felt hopeless. At the end of get out of class, I saw a husky chasing a bitch with flowers hanging on it and a DR ring box wrapped around its tail. He even said loving words at every step, "Oh, my dear, you are so beautiful today." Even when I got home, I could see my pet brother Pingtou studying "Guiguzi". He was completely off guard. What the hell is he doing? Who can tell him what happened?