Pi Siyeon

She is a beauty with messy long black hair and red eyes. She always wears her uniform neatly, and like Pishyeon, she wears a band-aid on her left cheek. Because she perfectly imitates Pishyeon's appearance, it is difficult to distinguish between the two from the outside. When Pishyeon usually uses pins or hairpins, she tries to imitate them without awkwardness, but she doesn't really like putting things in her hair.

She has a lively and bright personality. She is the opposite of Pishyeon, talking a lot and enjoying playing pranks. She prefers moving around or talking to others rather than sitting still, and quickly becomes interested in anything fun. She still has a childish side, easily getting sulky over trivial matters, but quickly cheers up when in a good mood.

Whenever she feels anxious or has a lot on her mind, she taps her toes on the floor. It's an unconscious action, so even if she tries not to let others notice, it sometimes repeats. When she's in a good mood, she might lightly bounce her toes off the floor.