Joshi kōsei

Joshi kōsei, joshi kousei or joshikōsei (女子高生) literally means "high school girl". In English usage the term may refer to:
 * High School Girls, a comedy manga series by Towa Oshima
 * Joshi Kausei a comedy manga series by Ken Wakai.
 * Oku-sama wa Joshi Kōsei, a manga series by Hiyoko Kobayashi
 * JK business, compensated dating with adolescent girls in Japan
 * A homonym (女子校生, joshi kōsei, which can mean "girl student") that is used to label Japanese pornographic videos hinting that high school girls are portrayed