We Are in a Different World, but Something Feels Wrong

Zhang Yu, a top student at Blue Star University of Science and Technology. At least that's what he thinks. When he woke up, he found that he was in a different world. There is also a "get stronger as you fight" system in your mind. The system asked him to play the role of a brave man and defeat the devil, saying that he could go home in this way. Zhang Yu felt that this task was simply untenable, and the reasons were too lame and full of loopholes. But he had no choice. Because the system is parasitic in his mind. So he could only doubt while embarking on the journey. It's just... This different world... Why is it getting more and more wrong the further you go?