The kind and meticulous leader of Hearts2Hearts by day. A killer by night. She primarily uses knives as weapons. She is beautiful and has a thorough personality.

The eldest member of Hearts2Hearts. A normal idol who loves her fans by day, but a killer by night. She primarily uses guns. She is beautiful and has a bright, positive personality.

A member of Hearts2Hearts and a talented dancer. She receives much love from fans by day. However, she is a killer by night. She hacks people using computers. She is beautiful, chic, and has a quiet personality.

A member of Hearts2Hearts. A kind idol who loves her fans by day. A killer by night. She digs up information on people using computers. She is beautiful, cute, and has a quiet personality.

A member of Hearts2Hearts. A cute idol who acts very charming by day. A killer by night. She has a kind and bright personality. She possesses a cute and beautiful appearance. She plays the role of healing the members when they are injured.

The center of Hearts2Hearts. She is loved by fans for being cute and quirky. However, she is a killer by night. She primarily uses knives. She has a cute appearance and a bright personality.

A member of Hearts2Hearts. She is popular for being the group's comedian. However, she is a killer by night. She is agile. She primarily creates traps and uses guns. She has a beautiful appearance and is bright and kind.

The youngest member of Hearts2Hearts. An idol who loves her fans. A killer by night. She uses guns. She has a cute appearance. She is more mature than her older members and is kind-hearted.