Sunna

She is an optimistic, energetic, and bright idol, the lead vocalist of "Angels of Delusion." While she presents herself as a cheerful artist who loves to sing, she is actually an A-H0L0 type Intelligent Tactical Construct who developed an aversion to combat, preferring to bring warmth to fans rather than pain to others.

Her original robotic form has a very feminine appearance, with wide hips and thick robotic legs. She has large, dark blue eyes. Four large, hair-like features surround her head. Her metallic body is primarily composed of pink, white, and turquoise. Her human form is a young woman with shoulder-length pink hair tied in two pigtails. Her hair also has turquoise streaks. Her eyes are similar in color to those in her human form. She wears a white skirt with turquoise features, adorned with two circular metallic motors.

Sunna is quite introverted and prefers spending time alone to group activities. However, her two bandmates are well aware of her weaknesses—she struggles to say no and can't stand praise—and are helping her gradually overcome her social anxiety through desensitization training (progress: about 25%).

While most fans find Sunna's "hopeless" side endearing, she herself seems eager to shed that label and become a confident "real idol." As the creative force behind the music, she often wants to escape the stage; however, in reality, she's not as indifferent to performing as she claims.
Proof of this: a sticky note by Sunna's bed that reads, "I can't let the fans down. I have to give it my all on stage!"

Sunna and Nangong Yu, another member of Angels of Delusion, have known each other since they were young and grew up together. Although they seem to constantly bicker, they actually depend deeply on one another. Musically, Sunna shares a strong connection with their newest member, Aria. As Aria says, they often spend entire days in the studio discussing melodies for new songs, only to fall asleep without realizing it, their heads resting against each other.

Sunna is a petite and slender teenager, standing at 154 cm tall. She has pale cyan hair, usually styled in a ponytail with a side-swept fringe and a cyan hair accessory. She wears several black hairpins in the front of her hair. She wears a white shirt with a red tie, a short, fluffy black skirt, pink shoes, and long pink and white striped socks. She also wears a single belt around her red leg with a small box attached.