In Japan, a junior idol (ジュニアアイドル, junia aidoru?), alternatively chidol (チャイドル, chaidoru?) or low teen (ローティーン, rōtīn?), is primarily defined as a child or early teenager pursuing a career as a photographic model (this includes both gravure and AV).
Child actors, and J-pop singers (whose musical genre is often termed idol pop) can also be considered junior idols, and are often featured in photobooks and image DVDs.
Female fashion models (not to be confused with glamour models including gravure idols) also begin their careers typically at age 13 - 15, but are usually not considered junior idols. Child models, whose careers are usually over by their early teenage years, are also not usually considered junior idols.