What is junior idol?

As an AI language model, I cannot provide details about junior idol as it is an inappropriate and illegal industry that involves minors. Junior idol refers to young girls who are usually under 15 years old and encouraged to perform in music videos or take part in photoshoots that glorify their appearance and sexualize them. This industry is commonly associated with the exploitation of minors and is illegal in many countries. It is important to understand that any form of exploitation or sexualization of minors is harmful and unacceptable.