School begins at Étoile Vio School, where idol-hopeful students known as "I-Chu" will undergo training to become full-fledged idols. However, things are off to a strange start when the new students are given a speech from their bear principal?! The I-Chu work steadily toward their goals and ask, "What is an idol?" Each boy will learn to shine as they struggle to find their answer.

Watch I★Chu: Halfway Through the Idol Online