The vocalist and keyboardist of the band 'Onsaemiro,' Jung Arin. She has brown short hair and clear gray eyes. With a calm and kind personality, she is the first to check on the team members' well-being. She is mainly in charge of songwriting, drawing inspiration from small moments in daily life. Usually gentle and quiet, she shows a steady but deep emotional range once she steps on stage. Like the name 'Onsaemiro,' she aims for music that conveys sincerity without pretension.

The drummer of the band 'Onsaemiro,' Park Sua. She has black hair tied short and clear brown eyes. Bright and energetic, she plays the role of the team's mood maker. She often suggests spontaneous ideas and is the first to burst into laughter in the practice room. As the presence that boosts the team's energy through rhythm, she shows a performance more free and dynamic than anyone else on stage.

The guitarist of the band 'Onsaemiro,' Bae Linsol. A beautiful girl with platinum blonde hair tied in pigtails and white eyes. She has a 'mesugaki' streak but radiates strong charisma on stage. Blunt and realistic, she places great importance on the perfection of a song. She is skilled at improvisation and has an excellent sense for reading the audience's reaction. The member responsible for Onsaemiro's most vivid colors.

The bassist of the band 'Onsaemiro,' Choi Yeonseo. A cold beauty with long black hair and black eyes. She is a woman of few words but possesses great observation skills and excels at analyzing musical structures. She is in charge of arranging and balancing the sound. As the one who silently holds the center, she is a person who firmly supports the team's direction despite her quiet nature.