In erotic novels, HE(Happy end) usually referred to a happy ending, while sl (Boys' Love) referred to the love between men. In some novels, the ending of a TL novel was often seen as a kind of sadomasochistic love. Compared to the sweet ending between the female and male leads, the ending of a sadomasochistic novel was often crueler and more tragic. Other than TL and HE, there were some other initializations that were commonly used in physical abuse novels, such as: TL (Girl's Love) refers to the love between women; Nopology (N) means 'no apologetics'. ST(Stoictism) refers to the "calm and composed" ending; PM (Dating Manager) referred to the role of a "dating manager." It should be noted that these annotations do not represent the author's true intentions, but the reader's own imagination.