Junko Furuta (古田 順子, Furuta Junko) was a Japanese high-school student who was abducted, tortured, raped, and murdered in the late 1980s. Her murder case was named "Concrete-encased high school girl murder case" (女子高生コンクリート詰め殺人事件, Joshikōsei konkurīto-zume satsujin-jiken), due to her body being discovered in a concrete drum. The abuse was mainly perpetrated by four teenage boys, Hiroshi Miyano (宮野 裕史), Jō Ogura (小倉 譲), Shinji Minato (湊 伸治), and Yasushi Watanabe (渡邊 恭史).