Joshi kōsei, joshi kousei or joshikōsei () 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 (, joshi kōsei, which can mean "girl student") that is used to label Japanese pornographic videos hinting that high school girls are portrayed