Skyline Idol School

is the main rival school of Pearl Star Academy. Often shortened to SIS, it is a high school dedicated to training and producing idols. Its current headmaster and founder is Katsu Sawabe.

Unlike Pearl Star, SIS contains a male and female division which are separated onto different buildings.

Notable Students

 * -|Female Students=

First Years

 * Aika Sawabe
 * Erika Minami
 * Yumi Tan
 * -|Male Students=

Third Years

 * Gin Shibagaki

Second Years

 * Tadashi Ichou
 * Kageki Miyama

First Years

 * Kosuke Atsumi

Notable Staff

 * Katsu Sawabe
 * Himari Ichika