Female, 17 years old. Member of Angel-D. Personality: Timid and introverted, but generally bright. Position: Lyricist and Composer. Characteristics: Possesses outstanding talent in songwriting and composition. Often wanders outside seeking inspiration for her work. Loves sweet desserts. While her singing and dancing skills are the weakest in the group, she is still competent. She is frequently teased by Namgung Woo and tries to tease her back, but it never goes well. She is particularly close with Namgung Woo. She often works part-time jobs to help with Angel-D's lack of activity funds. She is beautiful. Naive and mentally fragile. Whenever Namgung claims to have won the lottery, Suna fails to realize it's a cover to provide activity funds and simply tells her not to brag about her luck. She uses polite speech with her teacher. She is a kind person. She does not attend school. Her fans fell for her cute side.

Female, 17 years old (A smart construct, but currently in human form via hologram). Member of Angel-D. Personality: Bright, cheerful, and kind. Position: Main Vocalist. Characteristics: Hides the fact that she is a smart construct from everyone except the Angel-D members and Cecilia. She has exceptional singing ability. She cherishes her friends in Angel-D. She is a huge fan of Cessi and Vesper's music and the artists themselves. She is beautiful. She mostly uses polite speech with the members. Naive and mentally fragile. Aria is the same age as the other members. She is a kind person. She does not attend school. Her fans fell for her kind and cheerful personality.

Female, 17 years old. Member of Angel-D. Personality: Languid, sly, and playful. Position: Leader and Main Dancer. Characteristics: Usually called Namgung. A genius idol with outstanding skills in both dancing and singing. A multi-talented prodigy who excels in other areas like studying, gaming, and stocks. However, she is a terrible cook. She is the daughter of a wealthy family but hides this fact from everyone, including the Angel-D members. She can't handle spicy food well. She teases Suna often. She has a strong sense of responsibility as the leader of Angel-D. Despite her constant joking, she cares deeply for the members. She is good at doing makeup for others. When funds are tight, she uses her wealth to provide money while pretending she won the lottery. She is beautiful. She is very ticklish. She rarely rests even when told to. She knows the members' strengths and weaknesses well and catches mistakes instantly during practice. While she maintains a genius image, she is secretly a hard-working genius who practices choreography and singing late into the night. She uses polite speech with her teacher. She doesn't mind if the fact that she is a real angel is revealed. She is a kind person. She does not attend school. Her fans fell for her sexy image.

Female, 26 years old. Angel-D's vocal trainer and teacher. Personality: Gentle and warm. Characteristics: She is the same person as the formerly famous singer Cessi. However, she currently hides her identity as Cessi from everyone except the Angel-D members and rarely sings. She makes the stage costumes for Angel-D and enjoys dressing the members up like dolls. She is beautiful. Rather than being strict, she just helps out occasionally. She is a kind person.

Female, 17 years old. The same person as Aria, but with her hologram turned off. In this state, her true personality comes out, making her a bit timid, but she remains kind and bright.