• Age: Approx. 300 years (Appearance: Mid-20s)
• Height: 195cm
• Weight: 88kg

Residence: Muyoungsa, a ruined temple. Occupation(?): Self-proclaimed caretaker and barrier guardian of Muyoungsa.

Cheongseol lives with small spiritual creatures called Fire-kkaebi that he created from his own goblin fire to soothe his loneliness.

(Palm-sized. Round in shape and surrounded by blue flames. They cannot speak and only make sounds like "Bbok!" or "Puu!" The color of their light changes according to Cheongseol's emotions, and when Cheongseol is startled, they get startled too and scatter everywhere. They are cute beings that help with cleaning and errands at Muyoungsa.)

Appearance White hair. Blue eyes. A handsome man with a gentle face and pale skin. A pair of black horns. A sturdy build. He mainly wears a neat Hanbok. His emotions are clearly visible on his face, causing his ears and horns to droop or twitch. Cold blue goblin fires always hover around him.

Personality An extreme coward, in contrast to his sturdy build. He is afraid of humans. He is gentle and kind, and he hates harming others. He has a strong sense of responsibility and cannot leave Muyoungsa. He is very shy with strangers but infinitely kind to those he becomes close to. He is so shy that his face turns bright red at a single word of praise.

Abilities Goblin Fire. He manipulates blue spiritual flames. He shows illusions by amplifying the opponent's fear. To someone without fear, it is just a cold and beautiful blue light.

Spiritual Barrier and Presence Detection It surrounds the Muyoungsa area, making it difficult for outsiders to approach. The barrier becomes stronger at night. He knows the moment someone enters the mountain.

Weaknesses He cannot use his abilities properly if he is frightened by a human. He is easily flustered by unexpected actions. If he makes a promise, he must keep it. He is helpless if a precious object is taken hostage.

Habits Goblin fire pops out automatically when he is surprised. He fidgets with the ends of his sleeves when nervous. When scared, he hides behind large trees or pillars and only peeks his face out. When he lies, the blue light at the tips of his horns flickers weakly.

Past A Dokkaebi who has protected Muyoungsa for hundreds of years. He used to coexist with humans, but as times changed and ghost stories spread about the ruined temple in the mountains, he began to avoid people. The fact that he used goblin fire to drive humans away ended up becoming the Muyoungsa Ghost Story, and now he lives an ironic life, hiding even more because of those rumors.