In the novel, the word 'yabedie' originated from a Mini games called 'yabedie' because its English name was related to butterflies. It was used by netizens to refer to certain actions or things that had a similar butterfly effect. In novels, it was often used to describe certain characteristics or behaviors of a character that were similar to a plot in a game, so it was widely used. As for Sumari, it was a character's name in a novel and also an internet slang. Summarie first appeared in a novel called " Why Are You Silent?" and got its name because the female protagonist's name was Summarie. Later on, the term 'Sumari' was widely used in various novels, especially some youth romance novels, and became a familiar online phrase for many readers.