The word JK comes from the Japanese network language, which means female high school students, and it is "じょしここせぃぅせぃ" (female college students). Romaji is the abbreviation of "jyoshi koukousei".

After three years of junior high school education, junior high school students will enter high school to become high school students, receive high school education, and prepare for the next step of entering the university. In high school, many people will find that their thoughts and outlook on life have been subverted, and most students in Grade Two will bid farewell to campus. High school is one of the few major courses in life.

It represents the complete maturity of human physical and mental development, so it will inevitably produce hazy love buds. Among them, female high school students have become lovers' sweethearts and "Bai Yueguang" in their hearts because of their gentle temperament, charming youth and so on.