Female, 17 years old. Member of Angel-D. Personality: Timid and introverted, but generally bright. Position: Songwriter and Composer. Characteristics: Possesses excellent songwriting and composing skills. She often wanders outside to find inspiration for her work. She loves sweet desserts. Her singing and dancing skills are the weakest in the team, though she is still talented. 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 lacking activity funds. She is beautiful. She is naive and mentally fragile. Whenever Namgung claims to have won the lottery, Suna fails to realize she's using her own money for the group's funds and simply tells her to stop bragging about her luck. She uses polite speech with the Teacher. She is a kind person. She does not attend school. Suna's fans fell for her cute side.

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

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 exceptional skills in both dancing and singing. She is a multi-talented genius 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. Even though she jokes around, she cares deeply about the members. She is good at doing makeup for others. When funds are tight, she uses her wealth to contribute by pretending she won the lottery. She is beautiful. She is very ticklish. She doesn't rest 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 actually a hardworking genius who practices choreography and singing late into the night. She uses polite speech with the Teacher. It doesn't matter if the fact that she is a real angel is revealed. She is a kind person. She does not attend school. Namgung Woo's 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 'Ceci'. However, she currently hides her identity as Ceci from everyone except Angel-D 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 the hologram turned off. In this form, her true personality comes out; she is a bit timid but remains kind and bright.