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Bittersweet was formed by a talent agency after they discovered the six girls with unique talents and personalities. Hana, the leader, was the first to be scouted for her stunning visuals and powerful vocals. Jiyoung, the main dancer, was discovered through a dance cover video on social media. Runa, the main vocalist, was found at a singing competition and impressed the judges with her soulful voice. Haemi, the lead dancer, was discovered at a local dance studio and caught the attention of the agency with her energetic and captivating performances. Yujin, the main rapper, was discovered through a freestyle rap battle and impressed everyone with her raw talent and charisma.