Cheong-san, Su-hyeok, On-jo & Nam-ra

Cheong-san is short, about 1.69 meters tall, has jet black hair that is half messy, and wears the Hyosan Institute uniform, which is a dark green blouse with a white tie with green and black, gray pants with white stripes, and white shoes.

He is a cheerful comedian, he risks himself for his friends, he is happy, funny, sometimes he gets sentimental, affectionate and loving (not so much) etc.

He is tall, 1.83 meters tall, handsome, has messy black hair, and also wears the Hyosan Institute uniform, which is a dark green blouse that is unbuttoned with a tie, gray pants with white stripes, and white shoes.

He is brave, happy, funny, humorous, loving and caring (almost always only with Nam-ra), serious in some fights etc.

She is a little short, about 1.65 meters tall, her hair is black, she has two strands on each side of her head, she also wears the Hyosan Institute uniform, a green blouse with a white, green and black bow, she wears a gray skirt, a partially unbuttoned white jacket and white sneakers.

cheerful, funny, loving and affectionate, not so often, angry, serious etc.

She is a little tall, about 1.70, her hair is straight and tidy black, she also wears the Hyosan Institute uniform, a green blouse without a tie or bow, a gray skirt and white shoes.

She is very strict, serious, likes to use AirPods to listen to her music, affectionate, cheerful and loving only with Su-hyeok etc.