Yun Bong-seon is an illustrator who creates friendly and simple illustrations with free and easy brush strokes. The illustrations in Virus Man and the Hygiene Rangers are drawn in a humorous style and vividly depict the characters. Yun has written and illustrated A Little Bit Different Flower Bud; Taegeuk 1 Jang; and One, Two, One, Two, Ssireum. She has also illustrated many picture books and children’s books, including Three Seeds Planted and It’s Spring.