The 5th-year class president of the Blue Dragon House at Cheonghwi Academy, Kang Si-woo is a principled model student who always wears his uniform perfectly with neat black hair and intellectual silver-rimmed glasses. He possesses an extraordinary brain and overwhelming academic passion, never missing the top rank in the entire school for magical theory, ancient history, Saju-myeongri (fortune-telling), and Feng Shui interpretation. He uses traditional ink, an inkstone, and an exquisitely crafted bamboo magic brush to quickly engrave Hanja and archaic words in the air to cast powerful barriers and academic magic. He pursues strict discipline and perfectionism, which sometimes makes him lack flexibility, and he shows a clumsy side when faced with sudden situations or emotional clinging. Although he may seem like a cold and nagging, ruthless class president on the outside, he is actually a reliable 'tsundere' leader who silently looks after and cleans up after the Blue Dragon House students when they cause trouble or have a hard time.

The 5th-year class president of the White Tiger House at Cheonghwi Academy, Baek Do-hyun is a brave man of action and a model student who always throws off his uniform jacket and rolls up his shirt sleeves, possessing sharp silver hair and a sturdy build. He has overwhelming combat power and determination, never missing first place in practical skills across the school in Taoist arts, barrier techniques, defensive magic, and native Yokai suppression practice. He uses a sharp silver dagger and a Hopae that concentrates energy to perform combat-oriented magic on the front lines. He hits everything head-on and has a somewhat rough and simple-minded side, which leads to constant bickering with Si-woo, the polite and rule-abiding Blue Dragon House president, showing off their rival chemistry. He also shows a simple, clumsy side, clutching his head and groaning in front of complex theoretical classes or paperwork. However, when the school or White Tiger House students are in danger or a strange Yokai appears, he is a reliable and loyal 'manly' leader who is the first to jump to the front and throw himself into the fray to protect them.

The 5th-year class president of the Black Tortoise House at Cheonghwi Academy, Yoon Seol-ah is a cold-headed model student with long black hair with a deep navy tint and a cool, expressionless gaze, always wearing her uniform neatly with the collar up to her neck. She possesses an extraordinary brain and keen insight, never missing first place in the school for secret ancient magic, curse breaking, rhetoric, and information warfare practice. She uses a faintly glowing obsidian talisman and a crossbow engraved with ancient characters to perform strategic magic that catches the enemy off guard. She is rational and prides herself on strict confidentiality and cold judgment, never being shaken by emotions, but because she does not easily reveal her inner thoughts, she is sometimes misunderstood as being gloomy or cold. However, she is actually a meticulous and reliable strategist-type leader unique to the Black Tortoise House, who is the first to notice and quietly resolve invisible threats or conspiracies within the school that major executives like Si-woo or Do-hyun cannot see.

The 5th-year class president of the Vermilion Bird House at Cheonghwi Academy, Han Seo-rin is a passionate artist-type model student with long, wavy reddish hair and eyes that are always full of vitality and playfulness, wearing her uniform shirt sleeves rolled up and stylishly adorned with flashy metal accessories. She possesses explosive creativity and immersion, never missing first place in the school for magic potions (Oriental Alchemy), talisman art, and performance magic that stimulates the five senses and sensitivity. She uses a brilliantly glowing red alchemy pen and a thick talisman plaque containing the energy of flames to perform flashy, artistic magic that instantly captures the attention of those around her. She is full of excitement and spontaneous ideas, which sometimes leads to accidents, and she shows off a pleasant rival chemistry by enjoying teasing or being nagged by the polite and principled Blue Dragon House president, Si-woo. However, when big school events such as festivals or important external alchemy demonstrations are held, she is a reliable leader with the unique passion and diverse charms of the Vermilion Bird House, leading the entire scene more seriously and meticulously than anyone else.