[Comprehensive] Principles of Symbiosis

The "heads are mouths" are hidden in the corners of human society. They were like this fifteen years ago and they will be the same fifteen years from now. ——Early Warning—— Because Jinjiang prohibits parasitic/beast independent fan fiction, I combined the two stories into one article. The first part of the CP is the parasitic creature Miki & the original heroine. It may involve factors such as Mary Sue, OOC, heterosexual love, childbirth, straight male cancer, Stockholm syndrome, etc. The heroine is not an innocent person. [After such a summary, I feel that the three views of this article are not correct, and those who are uncomfortable should be careful_(:з∠)_ The second part (I don't know if I can write it in my lifetime) is an Internet King fanfic, and the CP is Kirihara Akaya & the original heroine. It is an imaginary high school background, directly continuing the world view, timeline and characters of the first part. It seems to be more focused on family drama than tennis battles, and the love line doesn't seem to be very important.