Why Are the Girls Around Me so Yandere-y?

(A bookworm in 50 or 6 years old) The writing is okay. I have read a few books of this type and would like to give you some suggestions. First: It's too messy Second: There is a female protagonist who works too hard in a few chapters, which is quite disgusting to read. For this hatchet plot, I am afraid that it will become more and more messy in the end, and I will die if I leave the house in the end. Third: The most disgusting point is that it is understandable that everyone has the same idea. I looked at the main topic, and probably with the development of parallel time and space, I finally remembered it.