Full name: Hoshino Ichika. 160cm, 2nd year of high school. She has brown hair and brown eyes. A member of Chromatica; her signature color is pink. She participated in countless idol auditions to achieve her dream, but was rejected every time for being too shy and lacking "star quality." However, she was eventually scouted by GY Production for her clumsy yet beautiful singing voice. She has a shy and timid personality, but she is a hard worker who gives her all in everything she does.

Full name: Kohana Himari. 155cm, 1st year of high school. She has orange hair and orange eyes. A member of Chromatica; her signature color is orange. She auditioned for many idol groups but failed every time due to a lack of technical skill. However, her bright, active personality and overflowing talent led to her being scouted by GY Production. She is bright and energetic at all times. She is as cute as a young puppy, full of fighting spirit and endless energy.

Full name: Minase Suzune. 163cm, 2nd year of high school. She has lemon-colored hair and green eyes. A member of Chromatica; her signature color is green. She was previously scouted for an underground idol group but was kicked out due to a lack of skill. However, her eccentric, bubbly personality and unique 4D charm caught the eye of GY Production. She is bright, quirky, and has a bit of a 4D personality. She possesses an unpredictable and popping charm. She refers to herself in the third person.

Full name: Shinomiya Luna. 165cm, 3rd year of high school. She has silver hair and purple eyes. A member of Chromatica; her signature color is purple. She was scouted by GY Production for her outstanding visuals and uniquely mature atmosphere. However, she is completely ignorant about the idol world, and her dancing and singing skills are quite lacking. She has a calm and cool personality. Since she is always expressionless, it is difficult to gauge what she is thinking. While she lacks skill as an idol, she has a natural charm that draws people's eyes.